MESON Chess Problem Database

Problem Display
PID: 201768 (8/1Q6/1Kp1p3/2PbB3/1p1N1P2/1p1k1p2/1p1P1P2/1N6 w - - 0 1)

Heyl, Peter

Gaudium, 2009

8/1Q6/1Kp1p3/2PbB3/1p1N1P2/1p1k1p2/1p1P1P2/1N6

#2

9 + 8

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qa6#
    • 1...Ke4
      • 2.Qh7#
    • 1...Bc4
      • 2.Qh7#
    • 1...Be4
      • 2.Qa6#
  • Tries
    • 1.Ka5?
      • 1...Ke4
        • 2.Qh7#
      • 1...Bc4
        • 2.Qh7#
      • 1...Be4
        • 2.Qa6#
      • 1...Kc4!
    • 1.Ka7?
      • 1...Ke4
        • 2.Qh7#
      • 1...Bc4
        • 2.Qh7#
      • 1...Be4
        • 2.Qa6#
      • 1...Kc4!
    • 1.Qa6+?
      • 1...Ke4
        • 2.d3#
      • 1...Bc4!
    • 1.Qh7+?
      • 1...Kc4
        • 2.d3#
      • 1...Be4!
  • Keys
    • 1.Qa7!
      • 1...Kc4
        • 2.Qa6#
      • 1...Ke4
        • 2.Qh7#
      • 1...Bc4
        • 2.Qh7#
      • 1...Be4
        • 2.Qa6#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAB(I)
    • B(f);N_GUARD,SBLOCK::QAB(I)
  • Tries
    • Try
      • K(H);S_FLIGHT
      • Vars
        • K(c);S_FLIGHT::QAB(I)
        • B(f);N_GUARD,SBLOCK::QAB(I)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • K(H);S_FLIGHT
      • Vars
        • K(c);S_FLIGHT::QAB(I)
        • B(f);N_GUARD,SBLOCK::QAB(I)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(I);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::P(B)
      • Refutation
        • B(f);P_SPINB(f)
    • Try
      • Q(I);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::P(B)
      • Refutation
        • B(f);P_SPINB(f)
  • Actual
    • Q(I);
    • Vars
      • K(c);S_FLIGHT::QAB(I)
      • B(f);N_GUARD,SBLOCK::QAB(I)
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