MESON Chess Problem Database
Problem Display
PID: 247606 (bnr5/p1pRB3/p1kP1p2/P4B2/2K5/1Q6/2P5/6n1 w - - 0 1)
Ellison, Wallace D
British Chess Magazine, 1932
#2
8 + 9
SOLUTION
- SOUND
- Sets
- 1...Rd8
- 2.Rxc7#
- 1...Re8
- 2.Rxc7#
- 1...Rf8
- 2.Rxc7#
- 1...Rg8
- 2.Rxc7#
- 1...Rh8
- 2.Rxc7#
- 1...Bb7
- 2.Qa4#
- 1...Se2
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Sh3
- 2.Qf3#
- 1...Sxd7
- 2.Be4#
- 1...cxd6
- 2.Qa4#
- 1...Rd8
- Tries
- 1.Be6?
- 1...Sxd7
- 2.Bd5#
- 1...cxd6
- 2.Qa4#
- 1...Se2
- 2.Qf3#
- 1...Rd8
- 2.Rxc7#
- 1...Re8
- 2.Rxc7#
- 1...Rf8
- 2.Rxc7#
- 1...Rg8
- 2.Rxc7#
- 1...Rh8
- 2.Rxc7#
- 1...Bb7
- 2.Qa4#
- 1...Sf3
- 2.Qxf3#
- 1...Sh3
- 2.Qf3#
- 1...f5!
- 1...Sxd7
- 1.Bf8?
- 1...Sxd7
- 2.Be4#
- 1...cxd6
- 2.Qa4#
- 1...Se2
- 2.Qf3#
- 1...Rd8
- 2.Rxc7#
- 1...Re8
- 2.Rxc7#
- 1...Bb7
- 2.Qa4#
- 1...Sf3
- 2.Qxf3#
- 1...Sh3
- 2.Qf3#
- 1...Rxf8!
- 1...Sxd7
- 1.Rd8?
- threat
- 2.Be4#
- 1...cxd6
- 2.Rxc8#
- 1...Rxd8!
- threat
- 1.Qa3?
- 1...Sxd7
- 2.Be4#
- 1...cxd6
- 2.Qxd6#
- 2.Qa4#
- 1...Se2
- 2.Qf3#
- 1...Rd8
- 2.Rxc7#
- 1...Re8
- 2.Rxc7#
- 1...Rf8
- 2.Rxc7#
- 1...Rg8
- 2.Rxc7#
- 1...Rh8
- 2.Rxc7#
- 1...Bb7
- 2.Qc5#
- 2.Qa4#
- 1...Sf3
- 2.Qxf3#
- 1...Sh3
- 2.Qf3#
- 1...Kb7!
- 1...Sxd7
- 1.Qd3?
- threat
- 2.Qe4#
- 2.Qd5#
- 1...cxd6
- 2.Qd5#
- 2.Qxd6#
- 1...Kb7!
- threat
- 1.Be6?
- Keys
- 1.Kb4!
- 1...Kb7
- 2.Kc5#
- 1...Sxd7
- 2.Be4#
- 1...cxd6
- 2.Qc4#
- 1...Rd8
- 2.Rxc7#
- 1...Re8
- 2.Rxc7#
- 1...Rf8
- 2.Rxc7#
- 1...Rg8
- 2.Rxc7#
- 1...Rh8
- 2.Rxc7#
- 1...Bb7
- 2.Qc4#
- 1...Se2
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Sh3
- 2.Qf3#
- 1...Kb7
- 1.Kb4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(i);N_GUARD::R1(G),XP(f)
- B(g);SBLOCK::QAB(B)
- S(a);N_GUARD::QAB(B)
- S(a);N_GUARD::QAB(B),XS(a)
- S(h);SBLOCK,XR(G)::B(E)
- P(f);XP(F)::QAB(B)
- Tries
- Try
- B(E);
- Vars
- S(h);SBLOCK,XR(G)::B(E)
- P(f);XP(F)::QAB(B)
- S(a);N_GUARD::QAB(B)
- R(i);N_GUARD::R1(G),XP(f)
- B(g);SBLOCK::QAB(B)
- S(a);N_GUARD::QAB(B),XS(a)
- Refutation
- P(d);
- Try
- B(H);
- Vars
- S(h);SBLOCK,XR(G)::B(E)
- P(f);XP(F)::QAB(B)
- S(a);N_GUARD::QAB(B)
- R(i);N_GUARD::R1(G),XP(f)
- B(g);SBLOCK::QAB(B)
- S(a);N_GUARD::QAB(B),XS(a)
- Refutation
- R(i);XB(H)
- Try
- R(G);
- Threat
- B(E)
- Vars
- P(f);OGATEB,XP(F)::R(G),XR(i)
- Refutation
- R(i);XR(G)
- Try
- Q(B);
- Vars
- S(h);SBLOCK,XR(G)::B(E)
- S(a);N_GUARD::QAB(B)
- R(i);N_GUARD::R1(G),XP(f)
- S(a);N_GUARD::QAB(B),XS(a)
- Refutation
- K(c);P_SPINP(f),S_FLIGHT
- Try
- Q(B);
- Threat
- DUALS(2)
- Refutation
- K(c);P_SPINP(f),S_FLIGHT
- Try
- Actual
- K(C);P-FLIGHT
- Vars
- K(c);P_SPINP(f),S_FLIGHT::QAR(B)+K(C)
- S(h);SBLOCK,XR(G)::B(E)
- P(f);XP(F)::QAR2(B)
- R(i);N_GUARD::R1(G),XP(f)
- B(g);SBLOCK::QAR2(B)
- S(a);N_GUARD::QAB(B)
- S(a);N_GUARD::QAB(B),XS(a)
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