MESON Chess Problem Database

Problem Display
PID: 239832 (3N3B/5B1N/2p2RPk/q3p2b/r5pK/r5p1/3P4/2Q4R w - - 0 1)

Haring, Jacobus

Themes-64, 1971

3N3B/5B1N/2p2RPk/q3p2b/r5pK/r5p1/3P4/2Q4R

#2

10 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Bc4?
      • threat
        • 2.Sf7#
      • 1...Qxd8
        • 2.d3#
      • 1...Bxg6
        • 2.Kxg4#
      • 1...Qc7
        • 2.d3#
      • 1...Qd5
        • 2.d3#
      • 1...Qa7!
    • 1.d4+?
      • 1...Re3
        • 2.Qxe3#
      • 1...Qd2!
    • 1.g7+?
      • 1...Kxh7
        • 2.g8Q#
      • 1...Bg6!
  • Keys
    • 1.Bb3!
      • threat
        • 2.Sf7#
      • 1...Qxd8
        • 2.d4#
      • 1...Bxg6
        • 2.Kxg3#
      • 1...Qc7
        • 2.d4#
      • 1...Qd5
        • 2.d4#
      • 1...Qa7
        • 2.d4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(G);
      • Threat
        • S(I)
      • Vars
        • Q(e);N_GUARD,P_PINR(E),XS(I)::QAB(A)+P(C)
        • B(g);P_SPINB(g),XP(F)::R(B)+K(D),XP(d)
        • Q(e);N_GUARD::QAB(A)+P(C)
      • Refutation
        • Q(e);
    • Try
      • P(C);CHECK
      • Vars
        • R(a);N_GUARD,P_SPINR(a)::QAB(A),XR(a)
      • Refutation
        • Q(e);P_SPINQ(e)
    • Try
      • P(F);CHECK
      • Vars
        • K(i);P-FLIGHT,XS(H)::P=Q
      • Refutation
        • B(g);P_SPINB(g)
  • Actual
    • B(G);
    • Threat
      • S(I)
    • Vars
      • Q(e);N_GUARD,P_PINR(E),XS(I)::QAB(A)+P(C)
      • B(g);P_SPINB(g),XP(F)::R(B)+K(D),XP(b)
      • Q(e);N_GUARD::QAB(A)+P(C)
      • Q(e);N_GUARD,SBLOCK::QAB(A)+P(C)
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