MESON Chess Problem Database

Problem Display
PID: 80229 (8/7B/1p1K2PP/5PP1/R1PPk2r/Pppp3N/3p1Q1N/4r2b w - - 0 1)

Rice, John Michael

Source?, 0000

8/7B/1p1K2PP/5PP1/R1PPk2r/Pppp3N/3p1Q1N/4r2b

#2

13 + 9

1101 BCSC Final 2008-2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rf4
      • 2.Qxf4#
    • 1...Rh5
      • 2.Qf4#
    • 1...Rxh6
      • 2.Qf4#
  • Tries
    • 1.Qxh4+?
      • 1...Kxf5
        • 2.Qf4#
        • 2.Qg4#
        • 2.g7#
      • 1...Ke3!
    • 1.Qf3+?
      • 1...Kxd4
        • 2.c5#
      • 1...Bxf3!
    • 1.c5?
      • threat
        • 2.d5#
      • 1...bxc5
        • 2.dxc5#
      • 1...Rf4
        • 2.Qxf4#
      • 1...Bf3
        • 2.Qxf3#
      • 1...b5!
    • 1.d5?
      • threat
        • 2.c5#
      • 1...Rf4
        • 2.Qxf4#
      • 1...b5
        • 2.cxb5#
      • 1...Bf3!
    • 1.f6?
      • threat
        • 2.g7#
      • 1...Rxh6
        • 2.Qf4#
      • 1...Rf4
        • 2.Qxf4#
      • 1...Re3!
    • 1.g7?
      • threat
        • 2.f6#
      • 1...Re3
        • 2.Qxh4#
      • 1...Rf4
        • 2.Qxf4#
      • 1...Rxh6+!
  • Keys
    • 1.Qg3!
      • threat
        • 2.Qe5#
      • 1...Kxd4
        • 2.c5#
      • 1...Kxf5
        • 2.g7#
      • 1...Rf4
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(h);N_GUARD::QAR1(A),XR(h)
    • R(h);N_GUARD::QAR1(A)
    • R(h);N_GUARD,P_PINP(K),XP(L)::QAR1(A)
  • Tries
    • Try
      • Q(A);CHECK,XR(h)
      • Refutation
        • K(g);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(g);P-FLIGHT,XP(G)::R(E)+P(F)
      • Refutation
        • B(b);XQ(A)
    • Try
      • P(F);
      • Threat
        • R(E)+P(G)
      • Vars
        • P(i);OGATE,XP(F)::R(E)+P(G),XP(i)
        • R(h);N_GUARD::QAR1(A),XR(h)
        • B(b);N_GUARD::QAB1(A),XB(b)
      • Refutation
        • P(i);
    • Try
      • P(G);
      • Threat
        • R(E)+P(F)
      • Vars
        • R(h);N_GUARD::QAR1(A),XR(h)
        • P(i);OGATE::R(E)+P(F),XP(i)
      • Refutation
        • B(b);
    • Try
      • P(H);
      • Threat
        • B(M)+P(K)
      • Vars
        • R(h);N_GUARD,XP(L)::QAR1(A)
        • R(h);N_GUARD::QAR1(A),XR(h)
      • Refutation
        • R(a);
    • Try
      • P(K);
      • Threat
        • B(M)+P(H)
      • Vars
        • R(a);SBLOCK::QAR(A),XR(h)
        • R(h);N_GUARD::QAR1(A),XR(h)
      • Refutation
        • R(h);CHECK,XP(L)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • K(g);P-FLIGHT,XP(G)::R(E)+P(F)
      • K(g);S_FLIGHT,XP(H)::B(M)+P(K)
      • R(h);N_GUARD::QAR1(A),XR(h)
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