MESON Chess Problem Database

Problem Display
PID: 267191 (1r2R3/2pPBp2/2R1NP2/1Q1PkNpK/5bP1/1rP1pP2/B7/8 w - - 0 1)

Haring, Jacobus

Schakend Nederland, 1979

1r2R3/2pPBp2/2R1NP2/1Q1PkNpK/5bP1/1rP1pP2/B7/8

#2

14 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...fxe6
      • 2.Rxe6#
  • Tries
    • 1.Sh6?
      • threat
        • 2.Sxf7#
      • 1...fxe6
        • 2.Sf7#
        • 2.Rxe6#
      • 1...R8xb5!
    • 1.Sc5?
      • threat
        • 2.Sd3#
      • 1...Kxd5
        • 2.Sb7#
      • 1...Rxc3
        • 2.Bd8#
      • 1...R8xb5!
    • 1.Qc5?
      • threat
        • 2.Qd4#
      • 1...R3b4
        • 2.d6#
      • 1...R8b4!
  • Keys
    • 1.Bc5!
      • threat
        • 2.Bd4#
      • 1...Kxd5
        • 2.Bb6#
      • 1...Kxf6
        • 2.Sxf4#
      • 1...R8xb5
        • 2.Sxc7#
      • 1...Rb4
        • 2.Sd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(g);OGATE,XS(J)::R1(I),XP(g)
  • Tries
    • Try
      • S(G);
      • Threat
        • S(G),XP(g)
      • Refutation
        • R(h);XQ(E)
    • Try
      • S(J);
      • Threat
        • S(J)
      • Vars
        • K(d);P-FLIGHT,P_SPINR(a),XP(F)::QAR(E)+S(J)
        • R(a);XP(B)::R(N)+B(M)
      • Refutation
        • R(h);XQ(E)
    • Try
      • Q(E);
      • Threat
        • QAB1(E)
      • Vars
        • R(a);::QAR(E)+P(F)
      • Refutation
        • R(h);
  • Actual
    • B(M);
    • Threat
      • B(M)
    • Vars
      • K(d);OGATEB,P-FLIGHT,P_SPINR(a),XP(F)::QAR(E)+B(M)
      • K(d);N_GUARD,S_CUTR(h),S_FLIGHT,XP(K)::R(I)+S(J),XB(c)
      • R(h);N_GUARD,XQ(E)::R(N)+S(J),XP(f)
      • R(a);::R(N)+S(J)
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Developed and maintained by Brian Stephenson.
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