MESON Chess Problem Database
Problem Display
PID: 107731 (4N3/5Rb1/4knP1/1R1q4/1n1p1PbQ/BN3P2/8/1B4K1 w - - 0 1)
Benoit, Marc
Il Due Mosse, 1960
#2
11 + 7
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qxb3
- 2.Re5#
- 1...Qxf3
- 2.Sxd4#
- 2.Re5#
- 1...Qc4
- 2.Re5#
- 1...Qc6
- 2.Sxd4#
- 2.Re5#
- 1...Qb7
- 2.Sxd4#
- 2.Re5#
- 1...Qa8
- 2.Sxd4#
- 2.Re5#
- 1...Qe5
- 2.Rxe5#
- 1...Qf5
- 2.Sxd4#
- 1...Qg5
- 2.Sxd4#
- 1...Qh5
- 2.Sxd4#
- 1...Qd6
- 2.Sxg7#
- 1...Qd7
- 2.Re5#
- 1...Qd8
- 2.Re5#
- 1...Bh6
- 2.Qxf6#
- 1...Bf8
- 2.Qxf6#
- 1...Sa2
- 2.Sc7#
- 2.Sxg7#
- 2.Re7#
- 1...Sc2
- 2.Sxg7#
- 1...Sd3
- 2.Sxg7#
- 1...Sa6
- 2.Sxg7#
- 2.Re7#
- 1...Sc6
- 2.Sc7#
- 2.Sxg7#
- 1...Se4
- 2.Qe7#
- 1...Sh5
- 2.Re7#
- 2.Qe7#
- 1...Sd7
- 2.Re7#
- 2.Qe7#
- 1...Sh7
- 2.Re7#
- 2.Qe7#
- 1...Sxe8
- 2.Qe7#
- 1...Qxb3
- Tries
- 1.Bf5+?
- 1...Kxf5
- 2.Qxg4#
- 1...Qxf5
- 2.Sxd4#
- 1...Bxf5!
- 1...Kxf5
- 1.Bxb4?
- threat
- 2.Sc7#
- 2.Sxg7#
- 2.Re7#
- 1...Qxb5
- 2.Sc7#
- 1...Sxe8
- 2.Re7#
- 2.Qe7#
- 1...d3
- 2.Sxg7#
- 1...Qc4
- 2.Sxg7#
- 2.Re5#
- 2.Re7#
- 1...Qc6
- 2.Sxd4#
- 2.Sxg7#
- 2.Re5#
- 2.Re7#
- 1...Qb7
- 2.Sxd4#
- 2.Sxg7#
- 2.Re5#
- 1...Qe5
- 2.Sxg7#
- 2.Rxe5#
- 2.Re7#
- 1...Qd6
- 2.Sxg7#
- 1...Qd7
- 2.Sxg7#
- 2.Re5#
- 1...Qd8
- 2.Sxg7#
- 2.Re5#
- 1...Bh6
- 2.Sc7#
- 2.Re7#
- 2.Qxf6#
- 1...Bf8
- 2.Sc7#
- 2.Qxf6#
- 1...Bh8
- 2.Sc7#
- 2.Re7#
- 1...Se4
- 2.Sc7#
- 2.Sxg7#
- 2.Qe7#
- 1...Sh5
- 2.Sc7#
- 2.Re7#
- 2.Qe7#
- 1...Sg8
- 2.Sc7#
- 2.Sxg7#
- 1...Qc5!
- threat
- 1.Rb6+?
- 1...Qd6
- 2.Sc7#
- 2.Rxd6#
- 1...Sc6
- 2.Sc7#
- 2.Sxg7#
- 2.Re7#
- 1...Qc6!
- 1...Qd6
- 1.Qe1+?
- 1...Qe4
- 2.Sxd4#
- 1...Qe5
- 2.Sxd4#
- 2.Rxe5#
- 2.Qxe5#
- 1...Se4!
- 1...Qe4
- 1.Qxg4+?
- 1...Qf5
- 2.Sxd4#
- 2.Bxf5#
- 2.Re5#
- 2.Qxf5#
- 1...Sxg4!
- 1...Qf5
- 1.f5+?
- 1...Ke5
- 2.Qg3#
- 2.Qh2#
- 1...Qxf5
- 2.Sxd4#
- 1...Bxf5!
- 1...Ke5
- 1.Bf5+?
- Keys
- 1.Ba2!
- threat
- 2.Sxd4#
- 1...Kf5
- 2.Qxg4#
- 1...Qxb3
- 2.Re5#
- 1...Sxa2
- 2.Sxg7#
- 1...Sxe8
- 2.Qe7#
- 1...Sc2
- 2.Sxg7#
- 1...Sc6
- 2.Sxg7#
- 1...Se4
- 2.Qe7#
- 1...Sh5
- 2.Sc5#
- 2.Qe7#
- 1...Sd7
- 2.Qe7#
- 1...Sh7
- 2.Sc5#
- 2.Qe7#
- 1...Sg8
- 2.Sc5#
- 1...d3
- 2.Sd4#
- threat
- 1.Ba2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 11
- Sets
- Q(d);OGATE,XS(D)::R1(H)
- Q(d);OGATE::R1(H)
- Q(d);OGATE::R1(H),XQ(d)
- Q(d);N_GUARD::S(D),XP(b)
- Q(d);SBLOCK::S(K),XB(g)
- B(g);N_GUARD::QAR1(G),XS(f)
- S(a);::S(K),XB(g)
- S(f);OGATE::QAR1(G)
- S(f);OGATE,XS(K)::QAR1(G)
- Tries
- Try
- B(A);CHECK
- Vars
- K(e);P_SPINQ(d),P_SPINS(f),S_FLIGHT,XB(A)::QAB1(G),XB(c)
- Q(d);XB(A)::S(D),XP(b)
- Refutation
- B(c);XB(A)
- Try
- B(C);XS(a)
- Threat
- DUALS(3)
- Vars
- Q(d);XR(H)::S(K)
- P(b);::S(K),XB(g)
- Q(d);::S(K),XB(g)
- Refutation
- Q(d);
- Try
- R(H);CHECK
- Refutation
- Q(d);P_SPINQ(d)
- Try
- Q(G);CHECK
- Vars
- Q(d);P_SPINQ(d)::S(D),XP(b)
- Refutation
- S(f);P_SPINS(f)
- Try
- Q(G);CHECK,XB(c)
- Refutation
- S(f);XQ(G)
- Try
- P(F);CHECK
- Vars
- Q(d);XP(F)::S(D),XP(b)
- Refutation
- B(c);XP(F)
- Try
- Actual
- B(A);
- Threat
- S(D),XP(b)
- Vars
- K(e);P_SPINQ(d),P_SPINS(f),S_FLIGHT::QAB1(G),XB(c)
- Q(d);OGATE,P_SPINQ(d),XS(D)::R1(H)
- S(a);XB(A)::S(K),XB(g)
- S(f);OGATE,XS(K)::QAR1(G)
- S(a);::S(K),XB(g)
- S(f);OGATE::QAR1(G)
- S(f);::S(D)
- P(b);::S(D)
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).