MESON Chess Problem Database
Problem Display
PID: 216566 (2b2B2/K3P1rQ/1RpkN3/4N3/P2bPP2/P5r1/B7/3R2q1 w - - 0 1)
Walsdorf, Dieter
Deutsche Schachzeitung, 1983
#2
13 + 7
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qh2
- 2.Rxd4#
- 1...Qe1
- 2.Rxd4#
- 1...Qf1
- 2.Rxd4#
- 1...Qh1
- 2.Rxd4#
- 1...Qg2
- 2.Rxd4#
- 1...Re3
- 2.Rxd4#
- 1...Rg4
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Rg5
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Rg6
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Rxe7+
- 2.Bxe7#
- 2.Qxe7#
- 1...Rg8
- 2.e8S#
- 1...Bb7
- 2.e8S#
- 1...Bd7
- 2.e8S#
- 1...Qh2
- Tries
- 1.Ka8?
- threat
- 2.Rxc6#
- 2.e8S#
- 1...Rxe7
- 2.Bxe7#
- 2.Rxc6#
- 2.Qxe7#
- 1...Rb3
- 2.Rxc6#
- 1...Rc3
- 2.e8S#
- 1...R7g4
- 2.Rxc6#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...R7g5
- 2.Rxc6#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...R7g6
- 2.Rxc6#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Bd7
- 2.e8S#
- 1...Bb7+!
- threat
- 1.Kb8?
- threat
- 2.Rxc6#
- 2.e8S#
- 1...Rxe7
- 2.Bxe7#
- 2.Rxc6#
- 2.Qxe7#
- 1...Rc3
- 2.e8S#
- 1...R7g4
- 2.Rxc6#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...R7g5
- 2.Rxc6#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...R7g6
- 2.Rxc6#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Bb7
- 2.e8S#
- 1...Bd7
- 2.e8S#
- 1...Rb3!
- threat
- 1.Sc4+?
- 1...Kxe6
- 2.Qf5#
- 1...Kd7!
- 1...Kxe6
- 1.Sc7?
- threat
- 2.e8S#
- 1...Kc5
- 2.Rxc6#
- 1...Rxe7
- 2.Qxe7#
- 1...R7g4
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...R7g5
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...R7g6
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Kxc7!
- threat
- 1.Sxg7?
- threat
- 2.e8S#
- 1...Kc5
- 2.Rxc6#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Kc7
- 2.Se8#
- 1...Rxg7!
- threat
- 1.Qxg7?
- threat
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Qxd1
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Rxa3
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Bxe6
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Rb3
- 2.e8Q#
- 2.e8R#
- 1...Qf2
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Qh2
- 2.Rxd4#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Qe3
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Qe1
- 2.Rxd4#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Qf1
- 2.Rxd4#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Qh1
- 2.Rxd4#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Qg2
- 2.Rxd4#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Rg2
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Rc3
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Rd3
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Re3
- 2.Rxd4#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Rf3
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Rh3
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Rg4
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Rg5
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Rg6
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Ba6
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Bb7
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Bd7
- 2.Sf7#
- 2.e8Q#
- 2.e8S#
- 2.e8B#
- 2.e8R#
- 1...Rxg7!
- threat
- 1.Ka8?
- Keys
- 1.Sc5!
- threat
- 2.Rxc6#
- 1...Rxe7+
- 2.Qxe7#
- 1...Kxc5
- 2.Rxc6#
- 1...Kc7
- 2.Rxc6#
- 1...Bb7
- 2.e8S#
- 1...Bd7
- 2.e8S#
- threat
- 1.Sc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 7
- Sets
- Q(a);N_GUARD::R(A),XB(c)
- R(b);S_CUTQ(a)::R(A),XB(c)
- R(f);N_PINP(K)::P=S
- B(g);N_PINP(K)::P=S
- Tries
- Try
- K(J);N_SPINP(K),N_SPINR(H),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- R(b);::R1(H),XP(d)
- R(b);::P=S
- B(g);::P=S
- Refutation
- B(g);CHECK
- Try
- K(J);N_SPINP(K),N_SPINR(H),S_FLIGHT
- Threat
- DUALS(2)
- Vars
- R(b);::P=S
- B(g);::P=S
- Refutation
- R(b);P_PINR(H)
- Try
- S(G);CHECK
- Vars
- K(e);N_SPINB(c),P-FLIGHT,XS(I)::QAB1(L)
- Refutation
- K(e);N_PINP(K),N_SPINP(d),P-FLIGHT
- Try
- S(I);N_SPINP(K)
- Threat
- P=S
- Vars
- K(e);N_PINR(H),N_SPINB(c),N_SPINP(d),S_FLIGHT::R1(H),XP(d)
- R(f);OGATE,P_PINS(I),P_SPINR(f),XP(K)::QAB1(L),XR(f)
- Refutation
- K(e);N_SPINB(c),N_SPINP(d),S_FLIGHT,XS(I)
- Try
- S(I);N_SPINP(K),XR(f)
- Threat
- P=S
- Vars
- K(e);N_SPINB(c),N_SPINP(d),S_FLIGHT::S(I)
- Refutation
- R(b);P_PINP(K),XS(I)
- Try
- Q(L);N_SPINP(K),XR(f)
- Threat
- DUALS(4)
- Vars
- R(b);::P=Q
- Refutation
- R(b);P_PINP(K),XQ(L)
- Try
- Actual
- S(I);N_SPINR(H)
- Threat
- R1(H),XP(d)
- Vars
- R(f);CHECK,OGATE,P_SPINR(f),XP(K)::QAB1(L),XR(f)
- K(e);N_SPINB(c),N_SPINP(d),S_FLIGHT,XS(I)::R1(H),XP(d)
- K(e);N_PINP(K),N_SPINB(c),N_SPINP(d),S_FLIGHT::R1(H),XP(d)
- B(g);N_PINP(K)::P=S
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).