MESON Chess Problem Database

Problem Display
PID: 232786 (3Bb2q/3p4/3n2p1/2R1Pkp1/Kp3N2/3N1B1P/8/b4R2 w - - 0 1)

Hoy, Paul

Freie Presse, 1978

3Bb2q/3p4/3n2p1/2R1Pkp1/Kp3N2/3N1B1P/8/b4R2

#2

9 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Se4
      • 2.Bg4#
    • 1...g4
      • 2.hxg4#
  • Keys
    • 1.Se6!
      • threat
        • 2.Bd5#
      • 1...dxe6+
        • 2.Bc6#
      • 1...Kxe6
        • 2.Bd5#
      • 1...Qxe5
        • 2.Sg7#
      • 1...Qxh3
        • 2.Sg7#
      • 1...Bxe5
        • 2.Sd4#
      • 1...Qh4
        • 2.Sg7#
      • 1...Qh5
        • 2.Sg7#
      • 1...Bd4
        • 2.Sxd4#
      • 1...Se4
        • 2.Bg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • S(e);SBLOCK::B(C)
    • P(d);OGATE::P(D),XP(d)
  • Actual
    • S(F);
    • Threat
      • R(A)+B(C)
    • Vars
      • P(g);CHECK,SBLOCK,XS(F)::R(A)+B(C)
      • K(c);S_FLIGHT,XS(F)::B(C)
      • Q(i);N_GUARD,P_SPINQ(i),XP(H)::S(F)
      • Q(i);N_GUARD,XP(D)::S(F)
      • B(a);N_GUARD,P_SPINB(a),XP(H)::S(F)
      • Q(i);N_GUARD::S(F)
      • B(a);N_GUARD::S(F),XB(a)
      • S(e);SBLOCK::R(A)+B(C),DCHECK
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