MESON Chess Problem Database
Problem Display
PID: 76870 (8/8/pRBn4/k2N2QK/8/N3p3/q2rp2b/R2bB3 w - - 0 1)
Gamage, Frederick
Frederick Gamage (Prcic), 2004
#2
8 + 9
SOLUTION
- SOUND
- Sets
- 1...Qb1
- 2.Sc4#
- 1...Qb3
- 2.Sc4#
- 1...Qc4
- 2.Sxc4#
- 1...Qxd5
- 2.Sc4#
- 1...Qb2
- 2.Sc4#
- 1...Qc2
- 2.Sxc2#
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Se4
- 2.Sc4#
- 1...Sf5
- 2.Sc4#
- 1...Sb7
- 2.Sc4#
- 1...Sf7
- 2.Sc4#
- 1...Sc8
- 2.Sc4#
- 1...Se8
- 2.Sc4#
- 1...Qb1
- Tries
- 1.Bxd2+?
- 1...Qxd2
- 2.Sc2#
- 2.Sc4#
- 1...exd2!
- 1...Qxd2
- 1.Rxa2?
- threat
- 2.Sc2#
- 2.Sc4#
- 1...Sb5
- 2.Sc4#
- 1...Bc2
- 2.Sxc2#
- 2.Sc4#
- 1...Bb3
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Ba4!
- threat
- 1.Rbb1?
- threat
- 2.Qd8#
- 1...Qxb1
- 2.Sc4#
- 1...Qxd5
- 2.Sc2#
- 2.Sc4#
- 1...Qb3
- 2.Sc4#
- 1...Qb2
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Se4
- 2.Sc4#
- 1...Sf5
- 2.Sc4#
- 1...Sb7
- 2.Sc4#
- 1...Sf7
- 2.Sc4#
- 1...Sc8
- 2.Sc4#
- 1...Se8
- 2.Sc4#
- 1...Sb5!
- threat
- 1.Rb2?
- threat
- 2.Qd8#
- 1...Qxd5
- 2.Sc2#
- 2.Sc4#
- 1...Qxb2
- 2.Sc4#
- 1...Qb3
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Se4
- 2.Sc4#
- 1...Sf5
- 2.Sc4#
- 1...Sb7
- 2.Sc4#
- 1...Sf7
- 2.Sc4#
- 1...Sc8
- 2.Sc4#
- 1...Se8
- 2.Sc4#
- 1...Sb5!
- threat
- 1.Rb3?
- threat
- 2.Qd8#
- 1...Qxb3
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Se4
- 2.Sc4#
- 1...Sf5
- 2.Sc4#
- 1...Sb7
- 2.Sc4#
- 1...Sf7
- 2.Sc4#
- 1...Sc8
- 2.Sc4#
- 2.Sf4#
- 1...Se8
- 2.Sc4#
- 2.Sf4#
- 1...Sb5!
- threat
- 1.Rb7?
- threat
- 2.Qd8#
- 1...Qxd5
- 2.Sc2#
- 2.Sc4#
- 1...Sxb7
- 2.Sc4#
- 1...Qb1
- 2.Sc4#
- 1...Qb3
- 2.Sc4#
- 1...Qb2
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Se4
- 2.Sc4#
- 1...Sf5
- 2.Sc4#
- 1...Sf7
- 2.Sc4#
- 1...Sc8
- 2.Sc4#
- 1...Se8
- 2.Sc4#
- 1...Sb5!
- threat
- 1.Rb8?
- threat
- 2.Qd8#
- 1...Qxd5
- 2.Sc2#
- 2.Sc4#
- 1...Qb1
- 2.Sc4#
- 1...Qb3
- 2.Sc4#
- 1...Qb2
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Se4
- 2.Sc4#
- 1...Sf5
- 2.Sc4#
- 1...Sb7
- 2.Sc4#
- 1...Sf7
- 2.Sc4#
- 1...Sc8
- 2.Sc4#
- 1...Se8
- 2.Sc4#
- 1...Sb5!
- threat
- 1.Bxd2+?
- Keys
- 1.Rb4!
- threat
- 2.Qd8#
- 1...Qxd5
- 2.Sc2#
- 1...Rxd5
- 2.Rb2#
- 1...Sc4
- 2.Sxc4#
- 1...Se4
- 2.Sc4#
- 1...Sb5
- 2.Sc4#
- 1...Sf5
- 2.Sc4#
- 1...Sb7
- 2.Sc4#
- 1...Sf7
- 2.Sc4#
- 1...Sc8
- 2.Sc4#
- 1...Se8
- 2.Sc4#
- threat
- 1.Rb4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 4
- Sets
- Q(b);::R(A)+S(C),DCHECK
- Q(b);::R(A)+S(C),DCHECK,XQ(b)
- Q(b);P_PINQ(E),P_SPINQ(b),XS(D)::R(A)+S(C),DCHECK
- S(i);N_GUARD::S(C),XS(i)
- S(i);N_GUARD::S(C)
- Tries
- Try
- B(B);CHECK,XR(c)
- Refutation
- P(f);XB(B)
- Try
- R(A);XQ(b)
- Threat
- DUALS(2)
- Vars
- S(i);::R(A)+S(C),DCHECK
- B(a);::R(A)+S(C),DCHECK
- S(i);::R(A)+S(C),DCHECK,XS(i)
- Refutation
- B(a);
- Try
- R(G);
- Threat
- QAB(E)
- Vars
- Q(b);XR(G)::R(A)+S(C),DCHECK
- Q(b);::R(A)+S(C),DCHECK
- S(i);N_GUARD::S(C),XS(i)
- S(i);N_GUARD::S(C)
- Refutation
- S(i);
- Try
- R(G);
- Threat
- QAB(E)
- Vars
- Q(b);XR(G)::R(A)+S(C),DCHECK
- Q(b);::R(A)+S(C),DCHECK
- S(i);N_GUARD::S(C),XS(i)
- S(i);N_GUARD::S(C)
- Refutation
- S(i);
- Try
- R(G);
- Threat
- QAB(E)
- Vars
- Q(b);XR(G)::R(A)+S(C),DCHECK
- S(i);N_GUARD::S(C),XS(i)
- S(i);N_GUARD::S(C)
- Refutation
- S(i);
- Try
- R(G);
- Threat
- QAB(E)
- Vars
- S(i);N_GUARD,XR(G)::S(C)
- Q(b);::R(A)+S(C),DCHECK
- S(i);N_GUARD::S(C),XS(i)
- S(i);N_GUARD::S(C)
- Refutation
- S(i);
- Try
- R(G);
- Threat
- QAB(E)
- Vars
- Q(b);::R(A)+S(C),DCHECK
- S(i);N_GUARD::S(C),XS(i)
- S(i);N_GUARD::S(C)
- Refutation
- S(i);
- Try
- Actual
- R(G);N_PINR(c)
- Threat
- QAB(E)
- Vars
- Q(b);P_PINQ(E),P_SPINQ(b),XS(D)::R(A)+S(C)
- R(c);OGATEB,P_PINQ(E),P_SPINR(c),XS(D)::B(B)+R(G)
- S(i);N_GUARD::S(C),XS(i)
- S(i);N_GUARD::S(C)
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