MESON Chess Problem Database

Problem Display
PID: 48447 (4k3/1r2b1BK/2P1NpP1/Q1p2N2/B7/8/2p5/3rR3 w - - 0 1)

Hermanson, Halvar

2nd Prize, Het Belgisch Schaakbord (L'Echiquier Belge), 1976-1977

4k3/1r2b1BK/2P1NpP1/Q1p2N2/B7/8/2p5/3rR3

#2

9 + 7

102 Probleemblad 1979
5110 Bekroonde Problemen 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.cxb7#
    • 1...Rxe1
      • 2.cxb7#
    • 1...Bd6
      • 2.Qd8#
      • 2.cxb7#
    • 1...Bd8
      • 2.Sc7#
  • Tries
    • 1.Sd6+?
      • 1...Bxd6
        • 2.Qd8#
      • 1...Rxd6!
    • 1.Bf8?
      • threat
        • 2.Sfg7#
      • 1...Bd6+
        • 2.cxb7#
      • 1...Bxf8+
        • 2.Seg7#
      • 1...Bd8+!
    • 1.Bh8?
      • threat
        • 2.Sfg7#
      • 1...Bd6+
        • 2.cxb7#
      • 1...Bf8+
        • 2.Seg7#
      • 1...Bd8+!
    • 1.Qd8+?
      • 1...Bxd8
        • 2.Sc7#
      • 1...Rxd8!
    • 1.Qa8+?
      • 1...Rd8
        • 2.cxb7#
      • 1...Bd8
        • 2.Sc7#
      • 1...Rb8!
  • Keys
    • 1.Bh6!
      • threat
        • 2.Sfg7#
      • 1...Bd6+
        • 2.cxb7#
      • 1...Bd8+
        • 2.Sc7#
      • 1...Bf8+
        • 2.Seg7#

There are these versions: 180975

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(a);N_GUARD::B(B)+P(E),XR(e)
    • R(a);N_GUARD,XR(A)::B(B)+P(E),XR(e)
    • B(f);P_PINB(H),SBLOCK::R(A)+S(F),DCHECK
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • B(f);P_PINB(H),XS(D)::QAR1(C)
      • Refutation
        • R(a);XS(D)
    • Try
      • B(H);
      • Threat
        • S(D)
      • Vars
        • B(f);CHECK,S_CUTR(a)::B(B)+P(E),XR(e)
        • B(f);CHECK,SBLOCK,XB(H)::R(A)+S(F),DCHECK
      • Refutation
        • B(f);CHECK
    • Try
      • B(H);
      • Threat
        • S(D)
      • Vars
        • B(f);CHECK,S_CUTR(a)::B(B)+P(E),XR(e)
        • B(f);CHECK,SBLOCK::R(A)+S(F),DCHECK
      • Refutation
        • B(f);CHECK
    • Try
      • Q(C);CHECK
      • Vars
        • B(f);P_PINB(H),SBLOCK,XQ(C)::R(A)+S(F),DCHECK
      • Refutation
        • R(a);XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • R(a);P_SPINR(a)::B(B)+P(E),XR(e)
        • B(f);P_PINB(H),P_SPINB(f)::R(A)+S(F),DCHECK
      • Refutation
        • R(e);P_SPINR(e)
  • Actual
    • B(H);
    • Threat
      • S(D)
    • Vars
      • B(f);CHECK,S_CUTR(a)::B(B)+P(E),XR(e)
      • B(f);CHECK,SBLOCK::R(A)+S(F),DCHECK
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