MESON Chess Problem Database
Problem Display
PID: 78078 (2K2kBr/1PP2P1p/4R2N/5RP1/5P2/p7/Pr1P4/B7 w - - 0 1)
Lazard, Frederic
2nd Prize, BCPS, 1933
#2
13 + 5
| 5454 | Near Snap | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Kg7
- 2.f8Q#
- 2.f8B#
- 1...Rb1
- 2.Re8#
- 1...Rxa2
- 2.Re8#
- 1...Rc2
- 2.Re8#
- 1...Rxd2
- 2.Re8#
- 1...Rb3
- 2.Re8#
- 1...Rb4
- 2.Re8#
- 1...Rb5
- 2.Re8#
- 1...Rb6
- 2.Re8#
- 1...Rxb7
- 2.Re8#
- 1...Rxg8
- 2.fxg8Q#
- 2.fxg8R#
- 1...Kg7
- Tries
- 1.Kd7?
- 1...Kg7
- 2.f8Q#
- 2.f8B#
- 1...Rxa2
- 2.Re8#
- 2.b8Q#
- 2.b8R#
- 2.c8Q#
- 2.c8R#
- 1...Rxb7
- 2.Re8#
- 1...Rxg8
- 2.fxg8Q#
- 2.fxg8R#
- 1...Rb1
- 2.Re8#
- 2.c8Q#
- 2.c8R#
- 1...Rc2
- 2.Re8#
- 2.b8Q#
- 2.b8R#
- 1...Rb3
- 2.Re8#
- 2.c8Q#
- 2.c8R#
- 1...Rb4
- 2.Re8#
- 2.c8Q#
- 2.c8R#
- 1...Rb5
- 2.Re8#
- 2.c8Q#
- 2.c8R#
- 1...Rb6
- 2.Re8#
- 2.c8Q#
- 2.c8R#
- 1...Rxd2+!
- 1...Kg7
- 1.Kb8?
- 1...Kg7
- 2.f8Q#
- 2.f8B#
- 1...Rxa2
- 2.Re8#
- 2.c8Q#
- 2.c8R#
- 1...Rxd2
- 2.Re8#
- 1...Rxg8
- 2.fxg8Q#
- 2.fxg8R#
- 1...Rb1
- 2.Re8#
- 2.c8Q#
- 2.c8R#
- 1...Rc2
- 2.Re8#
- 1...Rb3
- 2.Re8#
- 2.c8Q#
- 2.c8R#
- 1...Rb4
- 2.Re8#
- 2.c8Q#
- 2.c8R#
- 1...Rb5
- 2.Re8#
- 2.c8Q#
- 2.c8R#
- 1...Rb6
- 2.Re8#
- 2.c8Q#
- 2.c8R#
- 1...Rxb7+!
- 1...Kg7
- 1.Kd8?
- 1...Kg7
- 2.f8Q#
- 2.f8B#
- 1...Rxa2
- 2.Re8#
- 1...Rxb7
- 2.Re8#
- 1...Rxg8
- 2.fxg8Q#
- 2.fxg8R#
- 1...Rb1
- 2.Re8#
- 1...Rc2
- 2.Re8#
- 1...Rb3
- 2.Re8#
- 1...Rb4
- 2.Re8#
- 1...Rb5
- 2.Re8#
- 1...Rb6
- 2.Re8#
- 1...Rxd2+!
- 1...Kg7
- 1.Ra5?
- 1...Rxa2
- 2.Re8#
- 1...Rxd2
- 2.Re8#
- 1...Rxb7
- 2.Re8#
- 1...Rxg8
- 2.fxg8Q#
- 2.fxg8R#
- 1...Rb1
- 2.Re8#
- 1...Rc2
- 2.Re8#
- 1...Rb3
- 2.Re8#
- 1...Rb4
- 2.Re8#
- 1...Rb5
- 2.Re8#
- 1...Rb6
- 2.Re8#
- 1...Kg7!
- 1...Rxa2
- 1.Rb5?
- 1...Rxa2
- 2.Re8#
- 1...Rxd2
- 2.Re8#
- 1...Rxb5
- 2.Re8#
- 1...Rxg8
- 2.fxg8Q#
- 2.fxg8R#
- 1...Rb1
- 2.Re8#
- 1...Rc2
- 2.Re8#
- 1...Rb3
- 2.Re8#
- 1...Rb4
- 2.Re8#
- 1...Kg7!
- 1...Rxa2
- 1.Rc5?
- 1...Rxa2
- 2.Re8#
- 1...Rxd2
- 2.Re8#
- 1...Rxb7
- 2.Re8#
- 1...Rxg8
- 2.fxg8Q#
- 2.fxg8R#
- 1...Rb1
- 2.Re8#
- 1...Rc2
- 2.Re8#
- 1...Rb3
- 2.Re8#
- 1...Rb4
- 2.Re8#
- 1...Rb5
- 2.Re8#
- 1...Rb6
- 2.Re8#
- 1...Kg7!
- 1...Rxa2
- 1.Rd5?
- 1...Rxa2
- 2.Rd8#
- 2.Re8#
- 1...Rxd2
- 2.Re8#
- 1...Rxb7
- 2.Rd8#
- 2.Re8#
- 1...Rxg8
- 2.fxg8Q#
- 2.fxg8R#
- 1...Rb1
- 2.Rd8#
- 2.Re8#
- 1...Rc2
- 2.Rd8#
- 2.Re8#
- 1...Rb3
- 2.Rd8#
- 2.Re8#
- 1...Rb4
- 2.Rd8#
- 2.Re8#
- 1...Rb5
- 2.Rd8#
- 2.Re8#
- 1...Rb6
- 2.Rd8#
- 2.Re8#
- 1...Kg7!
- 1...Rxa2
- 1.Re1?
- 1...Rxa2
- 2.Re8#
- 1...Rxd2
- 2.Re8#
- 1...Rxb7
- 2.Re8#
- 1...Rxg8
- 2.fxg8Q#
- 2.fxg8R#
- 1...Rb1
- 2.Re8#
- 1...Rc2
- 2.Re8#
- 1...Rb3
- 2.Re8#
- 1...Rb4
- 2.Re8#
- 1...Rb5
- 2.Re8#
- 1...Rb6
- 2.Re8#
- 1...Kg7!
- 1...Rxa2
- 1.Re2?
- 1...Rxa2
- 2.Re8#
- 1...Rxd2
- 2.Re8#
- 1...Rxb7
- 2.Re8#
- 1...Rxg8
- 2.fxg8Q#
- 2.fxg8R#
- 1...Rb1
- 2.Re8#
- 1...Rc2
- 2.Re8#
- 1...Rb3
- 2.Re8#
- 1...Rb4
- 2.Re8#
- 1...Rb5
- 2.Re8#
- 1...Rb6
- 2.Re8#
- 1...Kg7!
- 1...Rxa2
- 1.Re3?
- 1...Rxa2
- 2.Re8#
- 1...Rxd2
- 2.Re8#
- 1...Rxb7
- 2.Re8#
- 1...Rxg8
- 2.fxg8Q#
- 2.fxg8R#
- 1...Rb1
- 2.Re8#
- 1...Rc2
- 2.Re8#
- 1...Rb3
- 2.Re8#
- 1...Rb4
- 2.Re8#
- 1...Rb5
- 2.Re8#
- 1...Rb6
- 2.Re8#
- 1...Kg7!
- 1...Rxa2
- 1.Re4?
- 1...Rxa2
- 2.Re8#
- 1...Rxd2
- 2.Re8#
- 1...Rxb7
- 2.Re8#
- 1...Rxg8
- 2.fxg8Q#
- 2.fxg8R#
- 1...Rb1
- 2.Re8#
- 1...Rc2
- 2.Re8#
- 1...Rb3
- 2.Re8#
- 1...Rb4
- 2.Re8#
- 1...Rb5
- 2.Re8#
- 1...Rb6
- 2.Re8#
- 1...Kg7!
- 1...Rxa2
- 1.Ree5?
- 1...Rxa2
- 2.Re8#
- 1...Rxd2
- 2.Re8#
- 1...Rxb7
- 2.Re8#
- 1...Rxg8
- 2.fxg8Q#
- 2.fxg8R#
- 1...Rb1
- 2.Re8#
- 1...Rc2
- 2.Re8#
- 1...Rb3
- 2.Re8#
- 1...Rb4
- 2.Re8#
- 1...Rb5
- 2.Re8#
- 1...Rb6
- 2.Re8#
- 1...Kg7!
- 1...Rxa2
- 1.d3?
- 1...Kg7
- 2.f8Q#
- 2.f8B#
- 1...Rxa2
- 2.Re8#
- 1...Rxb7
- 2.Re8#
- 1...Rxg8
- 2.fxg8Q#
- 2.fxg8R#
- 1...Rb1
- 2.Re8#
- 1...Rc2
- 2.Re8#
- 1...Rd2
- 2.Re8#
- 1...Rf2
- 2.Re8#
- 1...Rg2
- 2.Re8#
- 1...Rh2
- 2.Re8#
- 1...Rb3
- 2.Re8#
- 1...Rb4
- 2.Re8#
- 1...Rb5
- 2.Re8#
- 1...Rb6
- 2.Re8#
- 1...Re2!
- 1...Kg7
- 1.g6?
- 1...Kg7
- 2.f8Q#
- 2.f8B#
- 1...Rxa2
- 2.Re8#
- 2.g7#
- 1...Rxd2
- 2.Re8#
- 2.g7#
- 1...Rxb7
- 2.Re8#
- 2.g7#
- 1...Rxg8
- 2.fxg8Q#
- 2.fxg8R#
- 1...Rb1
- 2.Re8#
- 2.g7#
- 1...Rc2
- 2.Re8#
- 2.g7#
- 1...Rb3
- 2.Re8#
- 2.g7#
- 1...Rb4
- 2.Re8#
- 2.g7#
- 1...Rb5
- 2.Re8#
- 2.g7#
- 1...Rb6
- 2.Re8#
- 2.g7#
- 1...hxg6!
- 1...Kg7
- 1.b8Q?
- 1...Kg7
- 2.f8Q#
- 2.f8B#
- 1...Rxa2
- 2.Kb7#
- 2.Kd7#
- 2.Re8#
- 2.Qb4#
- 1...Rxd2
- 2.Re8#
- 1...Rxg8
- 2.fxg8Q#
- 2.fxg8R#
- 1...Rb1
- 2.Re8#
- 1...Rc2
- 2.Kb7#
- 2.Kd7#
- 2.Re8#
- 1...Rb3
- 2.Re8#
- 1...Rb4
- 2.Re8#
- 2.Qxb4#
- 1...Rb5
- 2.Re8#
- 1...Rb6
- 2.Re8#
- 1...Rb7
- 2.Kxb7#
- 2.Re8#
- 1...Rxb8+!
- 1...Kg7
- 1.b8S?
- 1...Kg7
- 2.f8Q#
- 2.f8B#
- 1...Rxa2
- 2.Sd7#
- 2.Re8#
- 1...Rxd2
- 2.Re8#
- 1...Rxg8
- 2.fxg8Q#
- 2.fxg8R#
- 1...Rb1
- 2.Sd7#
- 2.Re8#
- 1...Rc2
- 2.Sd7#
- 2.Re8#
- 1...Rb3
- 2.Sd7#
- 2.Re8#
- 1...Rb4
- 2.Sd7#
- 2.Re8#
- 1...Rb5
- 2.Sd7#
- 2.Re8#
- 1...Rb6
- 2.Sd7#
- 2.Re8#
- 1...Rb7
- 2.Sd7#
- 2.Re8#
- 1...Rxb8+!
- 1...Kg7
- 1.b8B?
- 1...Kg7
- 2.f8Q#
- 2.f8B#
- 1...Rxa2
- 2.Re8#
- 1...Rxd2
- 2.Re8#
- 1...Rxg8
- 2.fxg8Q#
- 2.fxg8R#
- 1...Rb1
- 2.Re8#
- 1...Rc2
- 2.Re8#
- 1...Rb3
- 2.Re8#
- 1...Rb4
- 2.Re8#
- 1...Rb5
- 2.Re8#
- 1...Rb6
- 2.Re8#
- 1...Rb7
- 2.Re8#
- 1...Rxb8+!
- 1...Kg7
- 1.b8R?
- 1...Kg7
- 2.f8Q#
- 2.f8B#
- 1...Rxa2
- 2.Kb7#
- 2.Kd7#
- 2.Re8#
- 1...Rxd2
- 2.Re8#
- 1...Rxg8
- 2.fxg8Q#
- 2.fxg8R#
- 1...Rb1
- 2.Re8#
- 1...Rc2
- 2.Kb7#
- 2.Kd7#
- 2.Re8#
- 1...Rb3
- 2.Re8#
- 1...Rb4
- 2.Re8#
- 1...Rb5
- 2.Re8#
- 1...Rb6
- 2.Re8#
- 1...Rb7
- 2.Kxb7#
- 2.Re8#
- 1...Rxb8+!
- 1...Kg7
- 1.Kd7?
- Keys
- 1.Re7!
- 1...Kxe7
- 2.f8Q#
- 1...Kg7
- 2.f8S#
- 1...Rxa2
- 2.Re8#
- 1...Rxd2
- 2.Re8#
- 1...Rxb7
- 2.Re8#
- 1...Rxg8
- 2.fxg8S#
- 1...Rb1
- 2.Re8#
- 1...Rc2
- 2.Re8#
- 1...Rb3
- 2.Re8#
- 1...Rb4
- 2.Re8#
- 1...Rb5
- 2.Re8#
- 1...Rb6
- 2.Re8#
- 1...Kxe7
- 1.Re7!
This anticipates 65709(1999)
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- K(d);OGATE,P_PINB(M),P_SPINR(a),S_FLIGHT::P=Q
- R(a);::R1(G)
- R(a);XP(B)::R1(G)
- R(a);P_PINP(J)::R1(G)
- R(a);XP(C)::R1(G)
- R(a);XP(I)::R1(G)
- R(e);OGATE,XB(M)::PXR(e)=Q
- Tries
- Try
- K(L);S_FLIGHT
- Vars
- K(d);OGATE,P_SPINR(a),S_FLIGHT::P=Q
- R(a);P_PINP(J),XP(I)::R1(G)
- R(e);OGATE,XB(M)::PXR(e)=Q
- Refutation
- R(a);CHECK,XP(C)
- Try
- K(L);P-FLIGHT,P_SPINP(I)
- Vars
- K(d);OGATE,P_PINB(M),P_SPINR(a),S_FLIGHT::P=Q
- R(a);N_PINP(I),XP(C)::R1(G)
- R(e);OGATE,XB(M)::PXR(e)=Q
- R(a);N_PINP(I)::R1(G)
- Refutation
- R(a);CHECK,XP(I)
- Try
- K(L);P-FLIGHT
- Vars
- K(d);OGATE,P_PINB(M),P_SPINR(a),S_FLIGHT::P=Q
- R(a);XP(B)::R1(G)
- R(a);XP(I)::R1(G)
- R(e);OGATE,XB(M)::PXR(e)=Q
- R(a);::R1(G)
- Refutation
- R(a);CHECK,XP(C)
- Try
- R(E);
- Vars
- R(a);XP(B)::R1(G)
- R(a);XP(C)::R1(G)
- R(a);XP(I)::R1(G)
- R(e);OGATE,XB(M)::PXR(e)=Q
- R(a);::R1(G)
- R(a);P_PINP(J)::R1(G)
- Refutation
- K(d);P_PINB(M),P_SPINR(a),S_FLIGHT
- Try
- R(E);
- Vars
- R(a);XP(B)::R1(G)
- R(a);XP(C)::R1(G)
- R(a);XR(E)::R1(G)
- R(e);OGATE,XB(M)::PXR(e)=Q
- R(a);::R1(G)
- R(a);P_PINP(J)::R1(G)
- Refutation
- K(d);P_PINB(M),P_SPINR(a),S_FLIGHT
- Try
- R(E);
- Vars
- R(a);XP(B)::R1(G)
- R(a);XP(C)::R1(G)
- R(a);XP(I)::R1(G)
- R(e);OGATE,XB(M)::PXR(e)=Q
- R(a);::R1(G)
- Refutation
- K(d);P_PINB(M),P_SPINR(a),S_FLIGHT
- Try
- R(E);
- Vars
- R(a);XP(C)::R1(G)
- R(e);OGATE,XB(M)::PXR(e)=Q
- Refutation
- K(d);P_PINB(M),P_SPINR(a),S_FLIGHT
- Try
- R(G);
- Vars
- R(a);XP(B)::R1(G)
- R(a);XP(C)::R1(G)
- R(a);XP(I)::R1(G)
- R(e);OGATE,XB(M)::PXR(e)=Q
- R(a);::R1(G)
- R(a);P_PINP(J)::R1(G)
- Refutation
- K(d);P_PINB(M),P_SPINR(a),S_FLIGHT
- Try
- R(G);
- Vars
- R(a);XP(B)::R1(G)
- R(a);XP(C)::R1(G)
- R(a);XP(I)::R1(G)
- R(e);OGATE,XB(M)::PXR(e)=Q
- R(a);::R1(G)
- R(a);P_PINP(J)::R1(G)
- Refutation
- K(d);P_PINB(M),P_SPINR(a),S_FLIGHT
- Try
- R(G);
- Vars
- R(a);XP(B)::R1(G)
- R(a);XP(C)::R1(G)
- R(a);XP(I)::R1(G)
- R(e);OGATE,XB(M)::PXR(e)=Q
- R(a);::R1(G)
- R(a);P_PINP(J)::R1(G)
- Refutation
- K(d);P_PINB(M),P_SPINR(a),S_FLIGHT
- Try
- R(G);
- Vars
- R(a);XP(B)::R1(G)
- R(a);XP(C)::R1(G)
- R(a);XP(I)::R1(G)
- R(e);OGATE,XB(M)::PXR(e)=Q
- R(a);::R1(G)
- R(a);P_PINP(J)::R1(G)
- Refutation
- K(d);P_PINB(M),P_SPINR(a),S_FLIGHT
- Try
- R(G);
- Vars
- R(a);XP(B)::R1(G)
- R(a);XP(C)::R1(G)
- R(a);XP(I)::R1(G)
- R(e);OGATE,XB(M)::PXR(e)=Q
- R(a);::R1(G)
- R(a);P_PINP(J)::R1(G)
- Refutation
- K(d);P_PINB(M),S_FLIGHT
- Try
- P(C);
- Vars
- K(d);OGATE,P_PINB(M),P_SPINR(a),S_FLIGHT::P=Q
- R(a);XP(B)::R1(G)
- R(a);XP(I)::R1(G)
- R(e);OGATE,XB(M)::PXR(e)=Q
- R(a);::R1(G)
- R(a);P_PINP(J)::R1(G)
- Refutation
- R(a);
- Try
- P(F);
- Vars
- K(d);OGATE,P_PINB(M),P_SPINR(a),S_FLIGHT::P=Q
- R(e);OGATE,XB(M)::PXR(e)=Q
- Refutation
- P(c);XP(F)
- Try
- P(I);
- Vars
- K(d);OGATE,P_PINB(M),P_SPINR(a),S_FLIGHT::P=Q
- R(a);XP(C)::R1(G)
- R(e);OGATE,XB(M)::PXR(e)=Q
- R(a);::R1(G)
- Refutation
- R(a);CHECK,XQ(I)
- Try
- P(I);
- Vars
- K(d);OGATE,P_PINB(M),P_SPINR(a),S_FLIGHT::P=Q
- R(a);XP(C)::R1(G)
- R(e);OGATE,XB(M)::PXR(e)=Q
- Refutation
- R(a);CHECK,XS(I)
- Try
- P(I);
- Vars
- K(d);OGATE,P_PINB(M),P_SPINR(a),S_FLIGHT::P=Q
- R(a);XP(B)::R1(G)
- R(a);XP(C)::R1(G)
- R(e);OGATE,XB(M)::PXR(e)=Q
- R(a);::R1(G)
- R(a);P_PINP(J)::R1(G)
- Refutation
- R(a);CHECK,XB(I)
- Try
- P(I);
- Vars
- K(d);OGATE,P_PINB(M),P_SPINR(a),S_FLIGHT::P=Q
- R(a);XP(C)::R1(G)
- R(e);OGATE,XB(M)::PXR(e)=Q
- R(a);::R1(G)
- Refutation
- R(a);CHECK,XR(I)
- Try
- Actual
- R(G);
- Vars
- K(d);OGATE,P_PINB(M),S_FLIGHT,XR(G)::P=Q
- K(d);OGATE,P_PINB(M),P_SPINR(a),S_FLIGHT::P=S
- R(a);XP(B)::R1(G)
- R(a);XP(C)::R1(G)
- R(a);XP(I)::R1(G)
- R(e);OGATE,XB(M)::PXR(e)=S
- R(a);::R1(G)
- R(a);P_PINP(J)::R1(G)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).