MESON Chess Problem Database

Problem Display
PID: 51594 (4BR2/Q5N1/2ppP3/2Pk4/3r1r2/1Pb2P2/7B/1KR5 w - - 0 1)

Wong Kong Weng

The Guardian, 1966

4BR2/Q5N1/2ppP3/2Pk4/3r1r2/1Pb2P2/7B/1KR5

#2

11 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Rf5#
    • 1...Rg4
      • 2.Rf5#
    • 1...Rh4
      • 2.Rf5#
    • 1...Rf5
      • 2.Rxf5#
  • Tries
    • 1.Bxc6+?
      • 1...Ke5
        • 2.Rf5#
      • 1...Kxc6!
    • 1.Qd7?
      • threat
        • 2.Qxd6#
      • 1...Ke5
        • 2.Rf5#
      • 1...Rxf3
        • 2.Qxc6#
      • 1...Kxc5!
  • Keys
    • 1.Qc7!
      • threat
        • 2.Qxd6#
      • 1...Kxc5
        • 2.Qa5#
      • 1...Ke5
        • 2.Rf5#
      • 1...Rxf3
        • 2.Qxc6#
      • 1...dxc5
        • 2.Bxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • K(d);P-FLIGHT,P_SPINR(c)::R1(K)
    • R(c);N_GUARD::R(K)
    • R(c);N_GUARD::R(K),XR(c)
  • Tries
    • Try
      • B(J);CHECK,XP(e)
      • Vars
        • K(d);P-FLIGHT,P_SPINR(c)::R1(K)
      • Refutation
        • K(d);S_FLIGHT,XB(J)
    • Try
      • Q(H);P_PINP(f)
      • Threat
        • QAR1(H),XP(f)
      • Vars
        • K(d);N_SPINP(f),P-FLIGHT,P_SPINR(c)::R1(K)
        • R(c);XP(E)::QAB1(H),XP(e)
      • Refutation
        • K(d);N_SPINP(f),P-FLIGHT,P_SPINB(a),XP(F)
  • Actual
    • Q(H);
    • Threat
      • QAR1(H),XP(f)
    • Vars
      • K(d);OGATEB,P-FLIGHT,P_SPINB(a),P_SPINP(e),XP(F)::QAR2(H)
      • K(d);P-FLIGHT,P_SPINP(f),P_SPINR(c)::R1(K)
      • R(c);XP(E)::QAB1(H),XP(e)
      • P(f);SBLOCK,XP(F)::B(J),XP(e)
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