MESON Chess Problem Database
Problem Display
PID: 94558 (8/4rpr1/4n1n1/3N1k1N/5q2/4QBR1/3P1R1P/5K2 w - - 0 1)
Bonham, RW
British Chess Magazine, 1936
#2
9 + 7
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qxg3
- 2.Sxg3#
- 1...Qe5
- 2.Be4#
- 2.Bg4#
- 1...Qg5
- 2.Bg4#
- 2.Qe4#
- 1...Qd6
- 2.Bg4#
- 2.Qe4#
- 1...Qh6
- 2.Bg4#
- 2.Qe4#
- 1...Qc7
- 2.Bg4#
- 2.Qe4#
- 1...Qb8
- 2.Bg4#
- 2.Qe4#
- 1...Qa4
- 2.Bg4#
- 1...Qb4
- 2.Bg4#
- 1...Qd4
- 2.Bg4#
- 1...Qe4
- 2.Qxe4#
- 1...Qg4
- 2.Bxg4#
- 1...Qh4
- 2.Bg4#
- 1...Sd4
- 2.Sxg7#
- 1...Sc5
- 2.Sxg7#
- 1...Sg5
- 2.Sxg7#
- 2.Bg4#
- 1...Sc7
- 2.Sxg7#
- 1...Sd8
- 2.Sxg7#
- 1...Sef8
- 2.Sxg7#
- 1...Sh4
- 2.Sxe7#
- 1...Se5
- 2.Sxe7#
- 2.Be4#
- 1...Sgf8
- 2.Sxe7#
- 1...Sh8
- 2.Sxe7#
- 1...Qxg3
- Tries
- 1.Be2?
- threat
- 2.Bd3#
- 1...Sd4
- 2.Sxg7#
- 1...Sc5
- 2.Sxg7#
- 1...Sg5
- 2.Sxg7#
- 2.Bg4#
- 1...Sc7
- 2.Sxg7#
- 1...Sd8
- 2.Sxg7#
- 1...Sef8
- 2.Sxg7#
- 1...Se5
- 2.Sxe7#
- 1...Qxf2+!
- threat
- 1.Bg2?
- threat
- 2.Bh3#
- 2.Qe4#
- 1...Sd4
- 2.Sxg7#
- 2.Bh3#
- 1...Qf3
- 2.Bh3#
- 1...Sc5
- 2.Sxg7#
- 2.Bh3#
- 1...Sg5
- 2.Sxg7#
- 1...Sc7
- 2.Sxg7#
- 2.Bh3#
- 1...Sd8
- 2.Sxg7#
- 2.Bh3#
- 1...Sef8
- 2.Sxg7#
- 2.Bh3#
- 1...Sh4
- 2.Sxe7#
- 2.Qe4#
- 1...Se5
- 2.Sxe7#
- 2.Be4#
- 2.Qe4#
- 1...Sgf8
- 2.Sxe7#
- 2.Qe4#
- 1...Sh8
- 2.Sxe7#
- 2.Qe4#
- 1...Qxf2+!
- threat
- 1.Rg5+?
- 1...Qxg5
- 2.Qe4#
- 1...Sxg5
- 2.Sxg7#
- 1...Kxg5!
- 1...Qxg5
- 1.Qd3+?
- 1...Qe4
- 2.Qxe4#
- 1...Ke5!
- 1...Qe4
- 1.Be2?
- Keys
- 1.d4!
- threat
- 2.Be4#
- 1...Qxe3
- 2.Sxe3#
- 1...Qxg3
- 2.Sxg3#
- 1...Qxf3
- 2.Qd3#
- 1...Qxd4
- 2.Bg4#
- 1...Sxd4
- 2.Sxg7#
- 1...Qe4
- 2.Bxe4#
- 2.Bg4#
- 2.Qxe4#
- 1...Sc5
- 2.Sxg7#
- 1...Sg5
- 2.Sxg7#
- 2.Bg4#
- 1...Sc7
- 2.Sxg7#
- 1...Sd8
- 2.Sxg7#
- 1...Sef8
- 2.Sxg7#
- threat
- 1.d4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 8
- Sets
- Q(a);XR(G)::S(I),XQ(a)
- Q(a);::R(C)+B(F),DCHECK
- Q(a);N_GUARD::QAB1(E),XQ(a)
- Q(a);::R(C)+B(F),DCHECK,XQ(a)
- S(c);N_GUARD::S(I),XR(g)
- S(d);N_GUARD::S(H),XR(e)
- Tries
- Try
- B(F);P_PINQ(a),P_SPINR(C)
- Threat
- B(F)
- Vars
- S(c);N_GUARD::S(I),XR(g)
- S(d);N_GUARD::S(H),XR(e)
- Refutation
- Q(a);CHECK,N_SPINQ(a),XR(C)
- Try
- B(F);P_PINQ(a),P_SPINR(C)
- Threat
- DUALS(2)
- Vars
- Q(a);::B(F)
- S(c);N_GUARD::S(I),XR(g)
- Refutation
- Q(a);CHECK,N_SPINQ(a),XR(C)
- Try
- R(G);CHECK
- Vars
- Q(a);SBLOCK,XR(G)::QAB1(E)
- S(c);SBLOCK,XR(G)::S(I),XR(g)
- Refutation
- K(b);P-FLIGHT,P_SPINQ(a),XR(G)
- Try
- Q(E);CHECK
- Vars
- Q(a);N_GUARD,P_SPINQ(a)::QAB1(E),XQ(a)
- Refutation
- K(b);P-FLIGHT
- Try
- Actual
- P(B);
- Threat
- B(F)
- Vars
- Q(a);XQ(E)::S(H),XQ(a)
- Q(a);XR(G)::S(I),XQ(a)
- Q(a);N_GUARD,P_PINR(C),P_SPINQ(a),XB(F)::QAB(E)
- Q(a);XP(B)::R(C)+B(F),DCHECK
- S(c);N_GUARD,XP(B)::S(I),XR(g)
- S(c);N_GUARD::S(I),XR(g)
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