MESON Chess Problem Database
Problem Display
PID: 6949 (8/2n3NK/3N1b2/2p2R2/2Pk4/3b2Q1/1P3Pn1/8 w - - 0 1)
Ellison, Wallace D
Chess, 1935
#2
8 + 6
| 56 | The Problemist | 2013 |
SOLUTION
- SOUND
- Sets
- 1...Bb1
- 2.Qc3#
- 1...Bf1
- 2.Qc3#
- 1...Bc2
- 2.Qc3#
- 1...Be2
- 2.Qc3#
- 1...Bxc4
- 2.Qc3#
- 1...Be4
- 2.Qc3#
- 1...Bxf5+
- 2.Sgxf5#
- 1...Bh4
- 2.Qe5#
- 1...Be5
- 2.Qxe5#
- 1...Bg5
- 2.Qe5#
- 1...Be7
- 2.Qe5#
- 1...Bxg7
- 2.Qxg7#
- 1...Bd8
- 2.Qe5#
- 1...Se1
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 2.fxe3#
- 1...Sf4
- 2.Qe3#
- 1...Sh4
- 2.Qe3#
- 1...Sb5
- 2.Se6#
- 1...Sd5
- 2.Se6#
- 1...Sa6
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sa8
- 2.Se6#
- 1...Se8
- 2.Se6#
- 1...Bb1
- Tries
- 1.Kh6?
- 1...Bxg7+
- 2.Qxg7#
- 1...Bxc4
- 2.Qc3#
- 1...Bxf5
- 2.Sgxf5#
- 2.Qc3#
- 1...Bb1
- 2.Qc3#
- 1...Bf1
- 2.Qc3#
- 1...Bc2
- 2.Qc3#
- 1...Be2
- 2.Qc3#
- 1...Be4
- 2.Qc3#
- 1...Bh4
- 2.Qe5#
- 1...Be5
- 2.Qxe5#
- 1...Be7
- 2.Qe5#
- 1...Bd8
- 2.Qe5#
- 1...Se1
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 2.fxe3#
- 1...Sf4
- 2.Qe3#
- 1...Sh4
- 2.Qe3#
- 1...Sb5
- 2.Se6#
- 2.Rd5#
- 1...Sd5
- 2.Se6#
- 2.Rxd5#
- 1...Sa6
- 2.Se6#
- 2.Rd5#
- 1...Se6
- 2.Sxe6#
- 2.Rd5#
- 1...Sa8
- 2.Se6#
- 2.Rd5#
- 1...Se8
- 2.Se6#
- 2.Rd5#
- 1...Bg5+!
- 1...Bxg7+
- 1.Kg8?
- 1...Bxf5
- 2.Sgxf5#
- 2.Qc3#
- 1...Bxg7
- 2.Qxg7#
- 1...Bb1
- 2.Qc3#
- 1...Bf1
- 2.Qc3#
- 1...Bc2
- 2.Qc3#
- 1...Be2
- 2.Qc3#
- 1...Be4
- 2.Qc3#
- 1...Bh4
- 2.Qe5#
- 1...Be5
- 2.Qxe5#
- 1...Bg5
- 2.Qe5#
- 1...Be7
- 2.Qe5#
- 1...Bd8
- 2.Qe5#
- 1...Se1
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 2.fxe3#
- 1...Sf4
- 2.Qe3#
- 1...Sh4
- 2.Qe3#
- 1...Sb5
- 2.Se6#
- 2.Rd5#
- 1...Sd5
- 2.Se6#
- 2.Rxd5#
- 1...Sa6
- 2.Se6#
- 2.Rd5#
- 1...Se6
- 2.Sxe6#
- 2.Rd5#
- 1...Sa8
- 2.Se6#
- 2.Rd5#
- 1...Se8
- 2.Se6#
- 2.Rd5#
- 1...Bxc4+!
- 1...Bxf5
- 1.Qf4+?
- 1...Be4
- 2.Qxe4#
- 1...Sxf4!
- 1...Be4
- 1.Qg4+?
- 1...Be4
- 2.Qxe4#
- 1...Sf4!
- 1...Be4
- 1.Kh6?
- Keys
- 1.Kh8!
- 1...Bxg7+
- 2.Qxg7#
- 1...Bxc4
- 2.Qc3#
- 1...Bxf5
- 2.Qc3#
- 1...Bb1
- 2.Qc3#
- 1...Bf1
- 2.Qc3#
- 1...Bc2
- 2.Qc3#
- 1...Be2
- 2.Qc3#
- 1...Be4
- 2.Qc3#
- 1...Bh4
- 2.Qe5#
- 1...Be5
- 2.Qxe5#
- 1...Bg5
- 2.Qe5#
- 1...Be7
- 2.Qe5#
- 1...Bd8
- 2.Qe5#
- 1...Se1
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 2.fxe3#
- 1...Sf4
- 2.Qe3#
- 1...Sh4
- 2.Qe3#
- 1...Sb5
- 2.Rd5#
- 1...Sd5
- 2.Rxd5#
- 1...Sa6
- 2.Rd5#
- 1...Se6
- 2.Rd5#
- 1...Sa8
- 2.Rd5#
- 1...Se8
- 2.Rd5#
- 1...Bxg7+
- 1.Kh8!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 7
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(b);OGATE::QAB1(C)
- B(b);N_PINR(E),OGATE::QAB1(C)
- B(b);N_PINR(E),OGATE,XP(D)::QAB1(C)
- B(b);CHECK,XR(E)::S(G),XB(b)
- B(e);N_GUARD::QAB1(C)
- B(e);N_GUARD::QAB1(C),XB(e)
- B(e);OGATE,XS(G)::QAB(C),XB(e)
- S(a);N_GUARD::QAB1(C)
- S(f);N_GUARD::S(G)
- S(f);N_GUARD::S(G),XS(f)
- Tries
- Try
- K(H);N_SPINR(E),P-FLIGHT
- Vars
- B(e);CHECK,OGATE,XS(G)::QAB(C),XB(e)
- B(b);OGATE,XP(D)::QAB1(C)
- B(b);OGATE::QAB1(C)
- B(e);N_GUARD::QAB1(C)
- B(e);N_GUARD::QAB1(C),XB(e)
- S(a);N_GUARD::QAB1(C)
- Refutation
- B(e);CHECK
- Try
- K(H);N_SPINR(E),S_FLIGHT
- Vars
- B(e);OGATE,XS(G)::QAB(C),XB(e)
- B(b);OGATE::QAB1(C)
- B(e);N_GUARD::QAB1(C)
- B(e);N_GUARD::QAB1(C),XB(e)
- S(a);N_GUARD::QAB1(C)
- Refutation
- B(b);CHECK,XP(D)
- Try
- Q(C);CHECK
- Vars
- B(b);N_GUARD,P_SPINB(b)::QAR1(C),XB(b)
- Refutation
- S(a);XQ(C)
- Try
- Q(C);CHECK
- Vars
- B(b);N_GUARD,P_SPINB(b)::QAR1(C),XB(b)
- Refutation
- S(a);P_SPINS(a)
- Try
- Actual
- K(H);N_SPINR(E),P-FLIGHT,P_SPINS(G)
- Vars
- B(e);CHECK,OGATE,XS(G)::QAB(C),XB(e)
- B(b);OGATE,XP(D)::QAB1(C)
- B(b);OGATE,XR(E)::QAB1(C)
- B(b);OGATE::QAB1(C)
- B(e);N_GUARD,N_PINS(G)::QAB1(C)
- B(e);N_GUARD::QAB1(C),XB(e)
- S(a);N_GUARD::QAB1(C)
- S(f);N_GUARD::R1(E)
- S(f);N_GUARD::R1(E),XS(f)
Developed and maintained by Brian Stephenson.
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CSS/Javascript (jQuery, Bootstrap & DataTables).