MESON Chess Problem Database

Problem Display
PID: 45884 (b5Q1/1R3p2/3P3N/1PPkB3/1Rn5/3Nb3/2B3K1/1r4n1 w - - 0 1)

Haymann, Jean

1st Prize, Israel Ring Ty., 1981

b5Q1/1R3p2/3P3N/1PPkB3/1Rn5/3Nb3/2B3K1/1r4n1

#2

11 + 7

3841 The Art of Israeli Chess Composition 1983
3752 FIDE Album (1980-1982) 1988

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.Qxf7#
    • 1...Sb2
      • 2.Qxf7#
    • 1...Sd2
      • 2.Qxf7#
    • 1...Sa3
      • 2.Qxf7#
    • 1...Sa5
      • 2.Qxf7#
    • 1...Sb6
      • 2.Qxf7#
  • Tries
    • 1.Sxf7?
      • threat
        • 2.Sg5#
      • 1...Ke4
        • 2.Sf4#
      • 1...Ke6
        • 2.Sh6#
      • 1...Sxe5
        • 2.Sfxe5#
      • 1...Sxd6
        • 2.Sxd6#
      • 1...Bg5
        • 2.Sxg5#
      • 1...Rf1!
  • Keys
    • 1.Rxf7!
      • threat
        • 2.Rf4#
      • 1...Ke6+
        • 2.Rb7#
      • 1...Ke4
        • 2.Qxa8#
      • 1...Sxe5
        • 2.Rf5#
      • 1...Sxd6
        • 2.Rd7#
      • 1...Bf4
        • 2.Rxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • K(e);P_PINR(J),S_FLIGHT::QAB1(K),XP(f)
    • S(d);::QAB(K),XP(f)
  • Tries
    • Try
      • S(I);XP(f)
      • Threat
        • QAB(K)+S(I)
      • Vars
        • K(e);P_SPINS(d),S_FLIGHT::B(A)+S(C)
        • K(e);P_PINR(J),S_FLIGHT::QAB(K)+S(I)
        • S(d);XB(G)::QAB(K)+S(I),XS(d)
        • S(d);XP(H)::QAB(K)+S(I),XS(d)
        • B(c);::QAB(K)+S(I),XB(c)
      • Refutation
        • R(a);
  • Actual
    • R(J);XP(f)
    • Threat
      • QAB(K)+R(J)
    • Vars
      • K(e);CHECK,S_FLIGHT::QAB(K)+R(J)
      • K(e);P_SPINS(d),S_FLIGHT::QAB(K),XB(g)
      • S(d);XB(G)::QAB(K)+R(J)
      • S(d);XP(H)::QAB(K)+R(J)
      • B(c);::QAB(K)+R(J),XB(c)
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