MESON Chess Problem Database
Problem Display
PID: 10356 (8/3K1N2/B1R5/1nBk1p2/5p2/2prbP2/2P1Q3/8 w - - 0 1)
Gooderson, Arthur R
6th HM., The Problemist, 1963
#2
8 + 7
SOLUTION
- SOUND
- Sets
- 1...Kc4+
- 2.Qxd3#
- 1...Bc1
- 2.Qe6#
- 1...Bg1
- 2.Qe6#
- 1...Bd2
- 2.Qe6#
- 1...Bf2
- 2.Qe6#
- 1...Bd4
- 2.Qe6#
- 1...Kc4+
- Tries
- 1.Bxe3?
- threat
- 2.Rc5#
- 1...Rxe3
- 2.Qc4#
- 1...Rd4
- 2.Qxb5#
- 1...Sd4
- 2.Bc4#
- 1...fxe3!
- threat
- 1.Bb4?
- 1...Kd4
- 2.Qxd3#
- 1...Rd1
- 2.Qc4#
- 1...Rd2
- 2.Qc4#
- 1...Rd4
- 2.Rc5#
- 2.Qxb5#
- 1...Bc1
- 2.Qe5#
- 1...Bg1
- 2.Qe5#
- 1...Bd2
- 2.Qe5#
- 1...Bf2
- 2.Qe5#
- 1...Bd4
- 2.Qe6#
- 1...Bb6
- 2.Qe5#
- 1...Ba7
- 2.Qe5#
- 1...Sa3
- 2.Rd6#
- 1...Sd4
- 2.Bc4#
- 2.Rc5#
- 2.Rd6#
- 1...Sd6
- 2.Rxd6#
- 1...Sa7
- 2.Rd6#
- 1...Sc7
- 2.Rd6#
- 1...Bc5!
- 1...Kd4
- 1.Bb6?
- 1...Bxb6
- 2.Qe5#
- 1...Rd1
- 2.Qc4#
- 1...Rd2
- 2.Qc4#
- 1...Rd4
- 2.Rc5#
- 2.Qxb5#
- 1...Bc1
- 2.Qe5#
- 2.Qe6#
- 1...Bg1
- 2.Qe5#
- 2.Qe6#
- 1...Bd2
- 2.Qe5#
- 2.Qe6#
- 1...Bf2
- 2.Qe5#
- 2.Qe6#
- 1...Bd4
- 2.Qe6#
- 1...Sa3
- 2.Rd6#
- 1...Sd4
- 2.Bc4#
- 2.Rc5#
- 2.Rd6#
- 1...Sd6
- 2.Rxd6#
- 1...Sa7
- 2.Bc4#
- 2.Rd6#
- 1...Sc7
- 2.Bc4#
- 2.Rd6#
- 1...Bc5!
- 1...Bxb6
- 1.Bxb5?
- 1...Bxc5
- 2.Qe5#
- 1...Rd1
- 2.Bc4#
- 2.Qc4#
- 1...Rd2
- 2.Bc4#
- 2.Qc4#
- 1...Bc1
- 2.Qxd3#
- 2.Qe5#
- 2.Qe6#
- 1...Bg1
- 2.Qe5#
- 2.Qe6#
- 1...Bd2
- 2.Qxd3#
- 2.Qe5#
- 2.Qe6#
- 1...Bf2
- 2.Qe5#
- 2.Qe6#
- 1...Bd4
- 2.Qe6#
- 1...Rd4!
- 1...Bxc5
- 1.Qxd3+?
- 1...Sd4
- 2.Bc4#
- 2.Qc4#
- 1...Bd4!
- 1...Sd4
- 1.Bxe3?
- Keys
- 1.Bd4!
- 1...Kxd4
- 2.Qxd3#
- 1...Rxd4
- 2.Qxb5#
- 1...Bxd4
- 2.Qe6#
- 1...Sxd4
- 2.Bc4#
- 1...Rd1
- 2.Qc4#
- 1...Rd2
- 2.Qc4#
- 1...Bc1
- 2.Qe5#
- 1...Bg1
- 2.Qe5#
- 1...Bd2
- 2.Qe5#
- 1...Bf2
- 2.Qe5#
- 1...Sa3
- 2.Rd6#
- 1...Sd6
- 2.Rxd6#
- 1...Sa7
- 2.Rd6#
- 1...Sc7
- 2.Rd6#
- 1...Kxd4
- 1.Bd4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 4
- ADDED MATES = 9
- REMOVED MATES = 1
- Sets
- K(f);CHECK,P_SPINR(b),P_SPINS(e),S_FLIGHT::QAB1(B),XR(b)
- B(c);OGATE::QAB1(B)
- Tries
- Try
- B(D);XB(c)
- Threat
- R1(F)
- Vars
- R(b);OGATE,XB(D)::QAB1(B)
- R(b);OGATE::QAR2(B),XS(e)
- S(e);OGATE::B(E)
- Refutation
- P(d);XB(D)
- Try
- B(D);
- Vars
- K(f);P-FLIGHT::QAR1(B),XR(b)
- R(b);OGATE::QAB1(B)
- B(c);OGATE::QAR1(B)
- B(c);OGATE,SBLOCK::QAB1(B)
- S(e);N_GUARD::R1(F)
- S(e);N_GUARD::R1(F),XS(e)
- Refutation
- B(c);
- Try
- B(D);
- Vars
- B(c);OGATE,XB(D)::QAR1(B)
- R(b);OGATE::QAB1(B)
- B(c);OGATE::QAB1(B)
- S(e);N_GUARD::R1(F)
- S(e);N_GUARD::R1(F),XS(e)
- Refutation
- B(c);
- Try
- B(E);XS(e)
- Vars
- B(c);OGATE,XB(D)::QAR1(B)
- B(c);OGATE::QAB1(B)
- Refutation
- R(b);
- Try
- Q(B);CHECK,XR(b)
- Refutation
- B(c);P_SPINB(c)
- Try
- Actual
- B(D);
- Vars
- K(f);OGATEB,P-FLIGHT,XB(D)::QAR1(B),XR(b)
- R(b);OGATE,SBLOCK,XB(D)::QAR2(B),XS(e)
- B(c);OGATE,SBLOCK,XB(D)::QAB1(B)
- S(e);OGATE,SBLOCK,XB(D)::B(E)
- R(b);OGATE::QAB1(B)
- B(c);OGATE::QAR1(B)
- S(e);N_GUARD::R1(F)
- S(e);N_GUARD::R1(F),XS(e)
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