MESON Chess Problem Database
Problem Display
PID: 258508 (2n3B1/3N2Q1/Kp2b3/p2kP3/RpRp4/8/5N2/8 w - - 0 1)
Williams, WP
English Mechanic and World of Science, 1893
(First published on Fri Jun 2 1893)
#2
8 + 7
| 15239 | Valois Notebooks | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Bf7
- 2.Bxf7#
- 2.Qxf7#
- 1...Bxg8
- 2.Qxg8#
- 1...Sd6
- 2.Sxb6#
- 1...Sa7
- 2.Sxb6#
- 1...Se7
- 2.Sxb6#
- 1...b3
- 2.Qg2#
- 1...b5
- 2.Rc5#
- 1...Bf7
- Tries
- 1.Raxb4?
- threat
- 2.Qg2#
- 1...Bxg8
- 2.Qxg8#
- 1...Bf7
- 2.Bxf7#
- 2.Qxf7#
- 1...Sd6
- 2.Sxb6#
- 1...axb4!
- threat
- 1.Rxa5+?
- 1...bxa5
- 2.Rc5#
- 1...b5
- 2.Rc5#
- 1...Kxc4!
- 1...bxa5
- 1.Rc1?
- threat
- 2.Qg2#
- 1...Bxg8
- 2.Qxg8#
- 1...Bf7
- 2.Bxf7#
- 2.Qxf7#
- 1...Sd6
- 2.Sxb6#
- 1...d3!
- threat
- 1.Rc2?
- threat
- 2.Qg2#
- 1...Bxg8
- 2.Qxg8#
- 1...Bf7
- 2.Bxf7#
- 2.Qxf7#
- 1...Sd6
- 2.Sxb6#
- 1...d3!
- threat
- 1.Rc7?
- threat
- 2.Qg2#
- 1...Bxg8
- 2.Qxg8#
- 1...Bf7
- 2.Bxf7#
- 2.Qxf7#
- 1...Sd6
- 2.Sxb6#
- 1...d3!
- threat
- 1.Rxc8?
- threat
- 2.Sxb6#
- 2.Qg2#
- 1...Bxg8
- 2.Qxg8#
- 1...Bf7
- 2.Bxf7#
- 2.Qxf7#
- 1...b5
- 2.Sb6#
- 2.Rc5#
- 2.Qg2#
- 1...d3!
- threat
- 1.Qf6?
- threat
- 2.Bxe6#
- 2.Qxe6#
- 1...Bxg8
- 2.Qc6#
- 1...Bf7
- 2.Bxf7#
- 2.Qc6#
- 2.Qxf7#
- 1...Kxc4!
- threat
- 1.Qh6?
- threat
- 2.Bxe6#
- 2.Qxe6#
- 1...Bxg8
- 2.Qc6#
- 1...Bf7
- 2.Bxf7#
- 2.Qc6#
- 1...Kxc4!
- threat
- 1.Qg4?
- threat
- 2.Bxe6#
- 2.Qxe6#
- 2.Qxd4#
- 1...Bxg8
- 2.Qxg8#
- 1...Bf7
- 2.Bxf7#
- 1...d3
- 2.Bxe6#
- 2.Qxe6#
- 2.Qd4#
- 2.Qe4#
- 1...Kxc4!
- threat
- 1.Qg6?
- threat
- 2.Bxe6#
- 2.Qxe6#
- 1...Bxg8
- 2.Qc6#
- 2.Qxg8#
- 1...Bf7
- 2.Bxf7#
- 2.Qxf7#
- 2.Qc6#
- 1...Kxc4!
- threat
- 1.Qf7?
- threat
- 2.Qxe6#
- 1...Bxf7
- 2.Bxf7#
- 1...Kxc4!
- threat
- 1.Raxb4?
- Keys
- 1.Qg3!
- 1...Kxc4
- 2.Bxe6#
- 1...Bxg8
- 2.Qxg8#
- 1...Bf7
- 2.Bxf7#
- 1...b3
- 2.Sf6#
- 2.Qg2#
- 2.Qf3#
- 1...Sd6
- 2.Sxb6#
- 1...Sa7
- 2.Sxb6#
- 1...Se7
- 2.Sxb6#
- 1...d3
- 2.Qxd3#
- 1...b5
- 2.Rc5#
- 1...Kxc4
- 1.Qg3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- B(f);N_SPINB(f),OGATE,XB(H)::QAB(G),XB(f)
- S(g);N_GUARD::S(F),XP(e)
- P(a);::QAB(G)
- P(e);N_GUARD::R1(C)
- Tries
- Try
- R(B);XP(a)
- Threat
- QAB(G)
- Vars
- B(f);N_SPINB(f),OGATE,XB(H)::QAB(G),XB(f)
- S(g);N_GUARD::S(F),XP(e)
- Refutation
- P(c);XR(B)
- Try
- R(B);CHECK,XP(c)
- Vars
- P(e);N_GUARD,XR(B)::R1(C)
- P(e);N_GUARD,P_SPINP(e)::R1(C)
- Refutation
- K(d);S_FLIGHT,XR(C)
- Try
- R(C);
- Threat
- QAB(G)
- Vars
- B(f);N_SPINB(f),OGATE,XB(H)::QAB(G),XB(f)
- S(g);N_GUARD::S(F),XP(e)
- Refutation
- P(b);
- Try
- R(C);
- Threat
- QAB(G)
- Vars
- B(f);N_SPINB(f),OGATE,XB(H)::QAB(G),XB(f)
- S(g);N_GUARD::S(F),XP(e)
- Refutation
- P(b);
- Try
- R(C);
- Threat
- QAB(G)
- Vars
- B(f);N_SPINB(f),OGATE,XB(H)::QAB(G),XB(f)
- S(g);N_GUARD::S(F),XP(e)
- Refutation
- P(b);
- Try
- R(C);XS(g)
- Threat
- DUALS(2)
- Vars
- B(f);N_SPINB(f),OGATE,XB(H)::QAB(G),XB(f)
- Refutation
- P(b);
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- B(f);N_SPINB(f),OGATE,XB(H)::QAB1(G)
- Refutation
- K(d);P_SPINP(a),S_FLIGHT,XR(C)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- B(f);N_SPINB(f),OGATE,XB(H)::QAB1(G)
- Refutation
- K(d);P_SPINP(a),S_FLIGHT,XR(C)
- Try
- Q(G);
- Threat
- DUALS(3)
- Vars
- B(f);N_SPINB(f),OGATE,XB(H)::QAB(G),XB(f)
- B(f);OGATEB::B(H),XB(f)
- Refutation
- K(d);P_SPINP(a),S_FLIGHT,XR(C)
- Try
- Q(G);
- Threat
- DUALS(2)
- Refutation
- K(d);P_SPINP(a),S_FLIGHT,XR(C)
- Try
- Q(G);
- Threat
- QAB1(G),XB(f)
- Vars
- B(f);OGATE,XQ(G)::B(H),XB(f)
- Refutation
- K(d);P_SPINP(a),S_FLIGHT,XR(C)
- Try
- Actual
- Q(G);
- Vars
- K(d);N_GUARD,P_SPINP(a),S_FLIGHT,XR(C)::B(H),XB(f)
- B(f);N_SPINB(f),OGATE,XB(H)::QAB(G),XB(f)
- B(f);OGATEB::B(H),XB(f)
- S(g);N_GUARD::S(F),XP(e)
- P(b);OGATEB::QAR2(G),XP(b)
- P(e);N_GUARD::R1(C)
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