MESON Chess Problem Database

Problem Display
PID: 72285 (6B1/K1p5/1BP4n/4N2Q/6pr/2k3pp/2P3Rb/nR6 w - - 0 1)

Stocchi, Ottavio

Chess, 1953

6B1/K1p5/1BP4n/4N2Q/6pr/2k3pp/2P3Rb/nR6

#2

9 + 9

56 The Problemist 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Sxc2
      • 2.Rb3#
    • 1...Sb3
      • 2.Rxb3#
  • Tries
    • 1.Qg6?
      • threat
        • 2.Qd3#
      • 1...Sb3
        • 2.Rxb3#
      • 1...Sf5!
    • 1.Qf5?
      • threat
        • 2.Qd3#
      • 1...Sb3
        • 2.Rxb3#
      • 1...Sxf5!
    • 1.Qg5?
      • threat
        • 2.Qd2#
        • 2.Qe3#
      • 1...Sxc2
        • 2.Rb3#
        • 2.Qd2#
      • 1...Sb3
        • 2.Rxb3#
      • 1...Bg1
        • 2.Qd2#
      • 1...Sf5
        • 2.Qd2#
      • 1...hxg2!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Bd4#
        • 2.Ba5#
        • 2.Qa5#
        • 2.Qc5#
        • 2.Qe5#
      • 1...Rxh5
        • 2.Bd4#
      • 1...Sxc2
        • 2.Rb3#
      • 1...Sxg8
        • 2.Qc5#
      • 1...hxg2
        • 2.Qc5#
      • 1...gxf3
        • 2.Qxf3#
      • 1...cxb6
        • 2.Qe5#
      • 1...Sb3
        • 2.Rxb3#
      • 1...Sf7
        • 2.Qc5#
      • 1...Bg1
        • 2.Qa5#
      • 1...Sf5
        • 2.Ba5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD,XP(B)::R1(A)
    • S(a);N_GUARD::R1(A),XS(a)
  • Tries
    • Try
      • Q(E);
      • Threat
        • QAR1(E)
      • Vars
        • S(a);N_GUARD::R1(A),XS(a)
      • Refutation
        • S(h);
    • Try
      • Q(E);
      • Threat
        • QAR1(E)
      • Vars
        • S(a);N_GUARD::R1(A),XS(a)
      • Refutation
        • S(h);XQ(E)
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);N_GUARD::R1(A),XS(a)
        • B(b);P_PINB(F)::QAB1(E)
        • S(h);::QAB1(E)
      • Refutation
        • P(e);XR(C)
  • Actual
    • S(D);
    • Threat
      • DUALS(5)
    • Vars
      • R(g);XQ(E)::B(F)
      • S(a);N_GUARD,XP(B)::R1(A)
      • S(h);XB(I)::QAR2(E)
      • P(e);XR(C)::QAR2(E)
      • P(f);OGATE,XS(D)::QAR(E),XP(f)
      • P(i);XB(F)::QAB(E)
      • S(a);N_GUARD::R1(A),XS(a)
      • S(h);::QAR2(E)
      • B(b);P_PINB(F)::QAB(E)
      • S(h);::B(F)
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