MESON Chess Problem Database
Problem Display
PID: 183322 (nRR1B3/2b5/4b3/1NkpN2Q/1p1r4/1P5p/5rpK/6B1 w - - 0 1)
Coombes, TA
The Problemist, 1943
#2
9 + 10
SOLUTION
- SOUND
- Sets
- 1...Rf1
- 2.Bxd4#
- 1...Ra2
- 2.Bxd4#
- 1...Rb2
- 2.Bxd4#
- 1...Rc2
- 2.Bxd4#
- 1...Re2
- 2.Bxd4#
- 1...Rf3
- 2.Bxd4#
- 1...Rff4
- 2.Sd3#
- 1...Rf5
- 2.Bxd4#
- 1...Rf6
- 2.Bxd4#
- 1...Rf7
- 2.Bxd4#
- 1...Rf8
- 2.Bxd4#
- 1...Rdf4
- 2.Sd3#
- 1...Sb6
- 2.Rxc7#
- 1...Rf1
- Tries
- 1.Qh4?
- threat
- 2.Qe7#
- 2.Qxd4#
- 1...Bxc8
- 2.Qxd4#
- 1...Rfd2
- 2.Qe7#
- 1...Rff4
- 2.Sd3#
- 2.Qe7#
- 1...Rf6
- 2.Bxd4#
- 2.Qxd4#
- 1...Rf7
- 2.Bxd4#
- 2.Qxd4#
- 1...Rd1
- 2.Qe7#
- 1...Rdd2
- 2.Qe7#
- 1...Rd3
- 2.Qe7#
- 1...Rc4
- 2.Qe7#
- 1...Re4
- 2.Qe7#
- 1...Rdf4
- 2.Sd3#
- 2.Qe7#
- 1...Rg4
- 2.Qe7#
- 1...Bg4
- 2.Qe7#
- 1...Rxh4!
- threat
- 1.Qg5?
- threat
- 2.Qe7#
- 1...Rf6
- 2.Bxd4#
- 2.Qc1#
- 1...Rf7
- 2.Bxd4#
- 2.Qc1#
- 1...Bxc8!
- threat
- 1.Qh4?
- Keys
- 1.Qh6!
- 1...Bxc8
- 2.Qc6#
- 1...Rfd2
- 2.Qf8#
- 1...Rf1
- 2.Bxd4#
- 1...Ra2
- 2.Bxd4#
- 2.Qf8#
- 1...Rb2
- 2.Bxd4#
- 2.Qf8#
- 1...Rc2
- 2.Bxd4#
- 2.Qf8#
- 1...Re2
- 2.Bxd4#
- 2.Qf8#
- 1...Rf3
- 2.Bxd4#
- 1...Rff4
- 2.Sd3#
- 1...Rf5
- 2.Bxd4#
- 2.Qc1#
- 1...Rf6
- 2.Bxd4#
- 2.Qc1#
- 1...Rf7
- 2.Bxd4#
- 2.Qc1#
- 1...Rf8
- 2.Bxd4#
- 2.Qc1#
- 2.Qxf8#
- 1...Rd1
- 2.Qf8#
- 1...Rdd2
- 2.Qf8#
- 1...Rd3
- 2.Qf8#
- 1...Rc4
- 2.Qf8#
- 1...Re4
- 2.Qf8#
- 1...Rdf4
- 2.Sd3#
- 1...Rg4
- 2.Qf8#
- 1...Rh4
- 2.Qf8#
- 1...Bg4
- 2.Qc6#
- 2.Qd6#
- 1...Bf5
- 2.Qf8#
- 2.Qc6#
- 2.Qd6#
- 1...Bd7
- 2.Qd6#
- 1...Bf7
- 2.Qf8#
- 2.Qc6#
- 2.Qd6#
- 1...Bg8
- 2.Qc6#
- 2.Qd6#
- 1...Sb6
- 2.Rxc7#
- 1...Bxc8
- 1.Qh6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 10
- REMOVED MATES = 8
- Sets
- R(a);OGATE,P_SPINR(e)::B(A),XR(e)
- R(a);N_PINS(E),P_SPINR(e)::S(E)
- R(e);N_PINS(E),P_SPINR(a)::S(E)
- S(j);N_GUARD::R(H),XB(i)
- Tries
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- B(h);N_SPINB(i),XR(H)::QAB1(F),XR(e)
- R(a);P_SPINR(e)::QAB(F)
- R(e);P_SPINR(a)::QAB(F)
- B(h);::QAB(F)
- Refutation
- R(e);P_SPINR(a),XQ(F)
- Try
- Q(F);
- Threat
- QAB(F)
- Refutation
- B(h);N_SPINB(i),XR(H)
- Try
- Actual
- Q(F);
- Vars
- B(h);N_SPINB(i),OGATE,XR(H)::QAR1(F)
- R(a);N_GUARD,P_SPINR(e)::QAB(F)
- R(a);OGATE,P_SPINR(e)::B(A),XR(e)
- R(a);N_PINS(E),P_SPINR(e)::S(E)
- R(e);P_SPINR(a)::QAB(F)
- R(e);N_PINS(E),P_SPINR(a)::S(E)
- B(h);OGATE::QAB1(F)
- S(j);N_GUARD::R(H),XB(i)
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