MESON Chess Problem Database

Problem Display
PID: 52297 (2B1RR2/rb3Q2/8/1Pb4N/1pK2N1r/5k1p/6p1/6B1 w - - 0 1)

Hermanson, Halvar

3rd HM., Het Belgisch Schaakbord (L'Echiquier Belge), 1984-1985

2B1RR2/rb3Q2/8/1Pb4N/1pK2N1r/5k1p/6p1/6B1

#2

9 + 8

5110 Bekroonde Problemen 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf4+
      • 2.Qxf4#
    • 1...Rxh5
      • 2.Sxh5#
    • 1...Ra1
      • 2.Qxb7#
    • 1...Ra2
      • 2.Qxb7#
    • 1...Ra3
      • 2.Qxb7#
    • 1...Ra4
      • 2.Qxb7#
    • 1...Ra5
      • 2.Qxb7#
    • 1...Ra8
      • 2.Qxb7#
    • 1...Be3
      • 2.Rxe3#
    • 1...Bd6
      • 2.Re3#
    • 1...Bxf8
      • 2.Re3#
    • 1...Bd5+
      • 2.Qxd5#
    • 1...Ba6
      • 2.Qd5#
  • Tries
    • 1.Bxb7+?
      • 1...Kg4
        • 2.Rg8#
        • 2.Qg6#
        • 2.Qg8#
        • 2.Qf5#
        • 2.Qg7#
      • 1...Rxb7!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Qe2#
      • 1...Rxf4+
        • 2.Rxf4#
      • 1...Bd5+
        • 2.Qxd5#
      • 1...Rxh5
        • 2.Qg4#
      • 1...Ra2
        • 2.Bxb7#
      • 1...Be3
        • 2.Qxe3#
      • 1...Be4
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • R(e);CHECK,OGATE,P_SPINR(e),XS(C)::QAR1(F),XR(e)
    • R(e);N_PINS(C),XS(E)::QAR(F)+S(C),XR(e)
    • R(g);N_GUARD::QAB(F),XB(h)
    • B(f);N_GUARD::R1(H),XB(f)
    • B(f);N_GUARD::R1(H)
    • B(f);N_GUARD,XR(I)::R1(H)
    • B(h);CHECK,N_GUARD::QAB(F),XB(h)
    • B(h);N_GUARD,P_PINP(D)::QAB(F)
  • Tries
    • Try
      • B(G);CHECK,XB(h)
      • Refutation
        • R(g);XB(G)
  • Actual
    • Q(F);
    • Threat
      • QAB1(F)
    • Vars
      • R(e);CHECK,OGATE,P_SPINR(e),XS(C)::R1(I),XR(e)
      • B(h);CHECK,N_GUARD::QAB(F),XB(h)
      • R(e);N_GUARD,N_PINS(C),XS(E)::QAB1(F)
      • R(g);N_GUARD::B(G),XB(h)
      • B(f);N_GUARD::QAR1(F),XB(f)
      • B(h);N_GUARD,N_PINS(C)::QAB1(F),XB(h)
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