MESON Chess Problem Database

Problem Display
PID: 64022 (BnR1R3/2N5/2bp4/P3r2Q/PN1k1P2/KPp1p1P1/3P4/8 w - - 0 1)

Wiedenhoff, Claude

Themes-64, 1978

BnR1R3/2N5/2bp4/P3r2Q/PN1k1P2/KPp1p1P1/3P4/8

#2

13 + 7

3750 FIDE Album (1977-1979) 1984

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Se6#
    • 1...Rxa5
      • 2.dxe3#
    • 1...Rb5
      • 2.dxe3#
    • 1...Rc5
      • 2.dxe3#
  • Tries
    • 1.Se6+?
      • 1...Ke4
        • 2.d3#
      • 1...Rxe6!
    • 1.Rxe5?
      • threat
        • 2.Se6#
        • 2.dxe3#
      • 1...exd2
        • 2.Se6#
      • 1...dxe5
        • 2.Qxe5#
      • 1...Bd5
        • 2.Sb5#
      • 1...d5
        • 2.Se6#
      • 1...Be4
        • 2.Sb5#
        • 2.Se6#
        • 2.Rxe4#
      • 1...Bd7
        • 2.Re4#
        • 2.dxe3#
      • 1...c2
        • 2.Se6#
      • 1...e2
        • 2.Se6#
      • 1...cxd2!
  • Keys
    • 1.Sb5+!
      • 1...Ke4
        • 2.d3#
      • 1...Kc5
        • 2.d4#
      • 1...Rxb5
        • 2.dxe3#
      • 1...Bxb5
        • 2.dxc3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • K(c);P_SPINR(d),S_FLIGHT::S(J)
    • R(d);N_GUARD,P_PINP(E),XP(H)::P(A),XP(b)
    • R(d);N_GUARD::P(A),XP(b)
  • Tries
    • Try
      • S(J);CHECK
      • Vars
        • K(c);P-FLIGHT,P_SPINB(e)::P(A)
      • Refutation
        • R(d);XS(J)
    • Try
      • R(M);XR(d)
      • Threat
        • DUALS(2)
      • Vars
        • P(b);XP(A)::S(J)
        • P(f);OGATE,XR(M)::QAB1(I),XP(f)
        • B(e);N_GUARD::S(J)
        • P(f);::S(J)
        • P(a);::S(J)
        • P(b);::S(J)
      • Refutation
        • P(a);XP(A)
  • Actual
    • S(J);CHECK
    • Vars
      • K(c);P-FLIGHT,P_SPINB(e),P_SPINR(d)::P(A)
      • K(c);OGATE,P_SPINB(e),P_SPINR(d),S_FLIGHT::P(A)
      • R(d);XS(J)::P(A),XP(b)
      • B(e);XS(J)::P(A),XP(a)
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