MESON Chess Problem Database

Problem Display
PID: 1025 (8/8/2K2p2/4k3/7B/5Q2/3P4/8 w - - 0 1)

Strydom, Jan

The Problemist Supplement, 1996

8/8/2K2p2/4k3/7B/5Q2/3P4/8

#2

4 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qd5#
    • 1...Ke6
      • 2.Qxf6#
    • 1...f5
      • 2.Qe3#
  • Tries
    • 1.Kc5?
      • 1...f5
        • 2.Qe3#
      • 1...Ke6!
    • 1.Bg3+?
      • 1...Kd4
        • 2.Qd5#
      • 1...Ke6!
    • 1.Bg5?
      • threat
        • 2.Qd5#
      • 1...Kd4
        • 2.Qd5#
      • 1...Ke6
        • 2.Qxf6#
      • 1...fxg5!
    • 1.Qf2?
      • 1...Ke6
        • 2.Qxf6#
      • 1...f5
        • 2.Qe3#
      • 1...Ke4!
    • 1.Qf4+?
      • 1...Ke6
        • 2.Qxf6#
      • 1...Kxf4!
    • 1.Qf5+?
      • 1...Kd4
        • 2.Qd5#
      • 1...Kxf5!
    • 1.d4+?
      • 1...Ke6
        • 2.Qxf6#
      • 1...Kxd4!
  • Keys
    • 1.d3!
      • threat
        • 2.Qe4#
        • 2.Qxf6#
      • 1...Kd4
        • 2.Bxf6#
      • 1...Ke6
        • 2.Qxf6#
      • 1...f5
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR1(B)
    • K(a);P-FLIGHT::QAR1(B),XP(b)
    • P(b);SBLOCK::QAR2(B)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • P(b);SBLOCK::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(C);
      • Threat
        • QAR1(B)
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
        • K(a);P-FLIGHT::QAR1(B),XP(b)
      • Refutation
        • P(b);XB(C)
    • Try
      • Q(B);
      • Vars
        • K(a);P-FLIGHT::QAR1(B),XP(b)
        • P(b);SBLOCK::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B),XP(b)
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,XQ(B)
    • Try
      • P(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B),XP(b)
      • Refutation
        • K(a);S_FLIGHT,XP(A)
  • Actual
    • P(A);
    • Threat
      • DUALS(2)
    • Vars
      • K(a);S_FLIGHT::B(C),XP(b)
      • K(a);P-FLIGHT::QAR1(B),XP(b)
      • P(b);SBLOCK::QAR2(B)
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