MESON Chess Problem Database

Problem Display
PID: 6961 (2Nb4/R3p3/pPkpp3/p7/K2PP3/Q7/nP6/8 w - - 0 1)

Smith, James Alfred John

Chess, 1935

2Nb4/R3p3/pPkpp3/p7/K2PP3/Q7/nP6/8

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bxb6
      • 2.Sxe7#
    • 1...Bc7
      • 2.Rxc7#
    • 1...Sc1
      • 2.Qc3#
    • 1...Sc3+
      • 2.Qxc3#
    • 1...Sb4
      • 2.Qc3#
    • 1...d5
      • 2.Qc5#
    • 1...e5
      • 2.d5#
  • Tries
    • 1.Kxa5?
      • threat
        • 2.Qa4#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Bxb6+!
    • 1.Rxe7?
      • threat
        • 2.Qxd6#
      • 1...Sc3+
        • 2.Qxc3#
      • 1...Bc7
        • 2.Rxc7#
      • 1...Sb4
        • 2.Qc3#
      • 1...d5
        • 2.Qc5#
        • 2.Qd6#
      • 1...Bxe7!
    • 1.Qxa2?
      • threat
        • 2.Qc4#
      • 1...Bxb6
        • 2.Sxe7#
      • 1...Bc7
        • 2.Rxc7#
      • 1...d5!
    • 1.Qb3?
      • threat
        • 2.Qc4#
      • 1...Sc3+
        • 2.Qxc3#
      • 1...Bxb6
        • 2.Sxe7#
        • 2.Qxb6#
      • 1...Bc7
        • 2.Rxc7#
      • 1...d5!
    • 1.Qd3?
      • threat
        • 2.Qc4#
      • 1...Sc3+
        • 2.Qxc3#
      • 1...Bxb6
        • 2.Sxe7#
      • 1...Bc7
        • 2.Rxc7#
      • 1...d5!
    • 1.Qe3?
      • 1...Sc3+
        • 2.Qxc3#
      • 1...Bxb6
        • 2.Sxe7#
      • 1...Bc7
        • 2.Rxc7#
      • 1...Sc1
        • 2.Qxc1#
        • 2.Qc3#
      • 1...Sb4
        • 2.Qc3#
      • 1...e5
        • 2.d5#
      • 1...d5!
  • Keys
    • 1.Qh3!
      • 1...Sc3+
        • 2.Qxc3#
      • 1...Bxb6
        • 2.Sxe7#
      • 1...Bc7
        • 2.Rxc7#
      • 1...d5
        • 2.Qxe6#
      • 1...Sc1
        • 2.Qc3#
      • 1...Sb4
        • 2.Qc3#
      • 1...e5
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • B(h);N_GUARD,SBLOCK,XP(F)::S(H),XP(g)
    • B(h);N_GUARD::R1(G),XB(h)
    • S(a);N_GUARD::QAR(B)
    • S(a);CHECK,N_GUARD::QAR(B),XS(a)
    • P(e);N_GUARD::QAR1(B)
    • P(f);N_GUARD::P(D)
  • Tries
    • Try
      • K(C);P-FLIGHT,P_SPINP(F),XP(b)
      • Threat
        • QAB(B)
      • Vars
        • S(a);N_GUARD::QAR(B),XS(a)
      • Refutation
        • B(h);CHECK,XP(F)
    • Try
      • R(G);XP(g)
      • Threat
        • QAR1(B),XP(e)
      • Vars
        • S(a);CHECK,N_GUARD::QAR(B),XS(a)
        • B(h);N_GUARD::R1(G),XB(h)
        • S(a);N_GUARD::QAR(B)
      • Refutation
        • B(h);XR(G)
    • Try
      • Q(B);XS(a)
      • Threat
        • QAR2(B)
      • Vars
        • B(h);N_GUARD,SBLOCK,XP(F)::S(H),XP(g)
        • B(h);N_GUARD::R1(G),XB(h)
      • Refutation
        • P(e);
    • Try
      • Q(B);
      • Threat
        • QAR2(B)
      • Vars
        • S(a);CHECK,N_GUARD::QAR(B),XS(a)
        • B(h);N_GUARD::R1(G),XB(h)
      • Refutation
        • P(e);
    • Try
      • Q(B);
      • Threat
        • QAR2(B)
      • Vars
        • S(a);CHECK,N_GUARD::QAR(B),XS(a)
        • B(h);N_GUARD,SBLOCK,XP(F)::S(H),XP(g)
        • B(h);N_GUARD::R1(G),XB(h)
      • Refutation
        • P(e);
    • Try
      • Q(B);
      • Vars
        • S(a);CHECK,N_GUARD::QAR(B),XS(a)
        • B(h);N_GUARD,SBLOCK,XP(F)::S(H),XP(g)
        • B(h);N_GUARD::R1(G),XB(h)
        • S(a);N_GUARD::QAR(B)
        • P(f);N_GUARD::P(D)
      • Refutation
        • P(e);
  • Actual
    • Q(B);
    • Vars
      • S(a);CHECK,N_GUARD::QAR(B),XS(a)
      • B(h);N_GUARD,SBLOCK,XP(F)::S(H),XP(g)
      • B(h);N_GUARD::R1(G),XB(h)
      • P(e);OGATEB::QAR2(B),XP(f)
      • S(a);N_GUARD::QAR(B)
      • P(f);OGATE::QAB1(B)
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