MESON Chess Problem Database

Problem Display
PID: 52851 (2B3R1/8/3PnP2/4BkP1/3Pp1pP/4PnK1/8/5Q2 w - - 0 1)

Heyl, Peter

Schach, 2004

2B3R1/8/3PnP2/4BkP1/3Pp1pP/4PnK1/8/5Q2

#2

11 + 5

SOLUTION

  • SOUND
  • Tries
    • 1.Bf4?
      • 1...Sxh4
        • 2.Qb5#
      • 1...Sxg5
        • 2.Bxg5#
      • 1...Se1
        • 2.Qb5#
      • 1...Sg1
        • 2.Qb5#
      • 1...Sd2
        • 2.Qb5#
      • 1...Sh2
        • 2.Qb5#
      • 1...Se5
        • 2.Bxe5#
      • 1...Sxd4!
    • 1.Qc4?
      • threat
        • 2.Bxe6#
        • 2.Qxe6#
      • 1...Sxg5
        • 2.Rxg5#
      • 1...Sxd4!
  • Keys
    • 1.Qb5!
      • 1...Sxd4
        • 2.Bxd4#
      • 1...Sxh4
        • 2.Bf4#
      • 1...Sxe5
        • 2.Qxe5#
      • 1...Sxg5
        • 2.Rxg5#
      • 1...Se1
        • 2.Bf4#
      • 1...Sg1
        • 2.Bf4#
      • 1...Sd2
        • 2.Bf4#
      • 1...Sh2
        • 2.Bf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(F);N_PINS(a),P_PINS(e)
      • Vars
        • S(a);N_GUARD,XP(E)::QAR(A)
        • S(a);OGATE,XP(G)::QAR(A)+B(F),XS(a)
        • S(a);N_GUARD::QAR(A)
        • S(a);OGATEB::QAR(A)+B(F),XS(a)
      • Refutation
        • S(a);XP(D)
    • Try
      • Q(A);N_PINS(a),P_PINS(e)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);OGATE,XP(G)::R1(K),XS(a)
      • Refutation
        • S(a);XP(D)
  • Actual
    • Q(A);N_PINS(a),P_PINS(e)
    • Vars
      • S(a);OGATE,XP(D)::QAR(A)+B(F),XS(a)
      • S(a);N_GUARD,XP(E)::QAR(A)+B(F)
      • S(a);N_SPINS(e),OGATE,P_SPINS(a),XB(F)::QAR1(A),XS(a)
      • S(a);OGATE,XP(G)::R1(K),XS(a)
      • S(a);N_GUARD::QAR(A)+B(F)
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