MESON Chess Problem Database

Problem Display
PID: 45418 (3K1N2/p1p4P/r1R2RN1/PpPkPP2/1Q2p3/3p4/2P2brq/7B w - - 0 1)

Hirschenson, Aaron

6th Place, Match: Brazil - Israel, 1969

3K1N2/p1p4P/r1R2RN1/PpPkPP2/1Q2p3/3p4/2P2brq/7B

#2

13 + 10

3841 The Art of Israeli Chess Composition 1983

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Bxe4#
      • 2.Qxe4#
    • 1...Rg3
      • 2.Bxe4#
      • 2.Qxe4#
    • 1...Rg5
      • 2.Bxe4#
      • 2.Qxe4#
    • 1...Rxg6
      • 2.Qxe4#
    • 1...Bd4
      • 2.Qb3#
    • 1...Bxc5
      • 2.Rxc5#
      • 2.Qxc5#
  • Tries
    • 1.Sd7?
      • threat
        • 2.Se7#
      • 1...Qxh7
        • 2.Sf4#
      • 1...Rxg6
        • 2.Bxe4#
        • 2.Qxe4#
      • 1...Bxc5
        • 2.Rxc5#
        • 2.Qxc5#
      • 1...Qxe5!
    • 1.c3?
      • threat
        • 2.Qb3#
      • 1...Rxg6
        • 2.Qxe4#
      • 1...e3
        • 2.Qd4#
      • 1...Rxc6!
  • Keys
    • 1.Se6!
      • threat
        • 2.Sxc7#
      • 1...Kxc6
        • 2.Qxe4#
      • 1...Qxe5
        • 2.Se7#
      • 1...Qxh7
        • 2.Sef4#
      • 1...Rxg6
        • 2.Qxe4#
      • 1...Rxc6
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(b);P_SPINP(e),XS(J)::QAB1(C),XP(e)
    • B(a);SBLOCK::QAB(C)
  • Tries
    • Try
      • S(M);
      • Threat
        • S(J)
      • Vars
        • Q(c);N_GUARD,XP(K)::S(J)
      • Refutation
        • Q(c);XP(F)
    • Try
      • P(B);
      • Threat
        • QAB(C)
      • Vars
        • R(b);P_SPINP(e),XS(J)::QAB1(C),XP(e)
        • P(e);P_SPINR(b),S_CUTB(a)::QAR1(C)
      • Refutation
        • R(h);XR(H)
  • Actual
    • S(M);
    • Threat
      • S(M),XP(j)
    • Vars
      • K(g);S_FLIGHT,XR(H)::QAB(C),XP(e)
      • Q(c);SBLOCK,XP(F)::S(J)
      • Q(c);N_GUARD,XP(K)::S(M)
      • R(b);P_SPINP(e),XS(J)::QAB1(C),XP(e)
      • R(h);SBLOCK,XR(H)::QAB(C)
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