MESON Chess Problem Database

Problem Display
PID: 163616 (r3kB2/p7/K7/4N3/8/2p5/7Q/8 w q - 0 1)

Pozarski, A

Sachmatija, 2005

r3kB2/p7/K7/4N3/8/2p5/7Q/8

#2

4 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Bd6?
      • threat
        • 2.Qh8#
      • 1...Kd8
        • 2.Qh8#
      • 1...0-0-0!
    • 1.Qh5+?
      • 1...Kxf8
        • 2.Qf7#
      • 1...Kd8!
    • 1.Qh8?
      • threat
        • 2.Ba3#
        • 2.Bb4#
        • 2.Bc5#
        • 2.Bd6#
      • 1...Kd8
        • 2.Bd6#
      • 1...0-0-0!
  • Keys
    • 1.Qh7!
      • threat
        • 2.Qe7#
      • 1...Kd8
        • 2.Qd7#
      • 1...Kxf8
        • 2.Qf7#
      • 1...0-0-0
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(D);
      • Threat
        • QAR(A)
      • Vars
        • K(d);P-FLIGHT::QAR(A)
      • Refutation
        • K(d);0-0-0
    • Try
      • Q(A);CHECK
      • Vars
        • K(d);P-FLIGHT,XB(D)::QAR1(A)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(4)
      • Vars
        • K(d);P-FLIGHT::QAR(A)+B(D)
      • Refutation
        • K(d);0-0-0
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • K(d);P-FLIGHT::QAR1(A)
      • K(d);P-FLIGHT,XB(D)::QAR1(A)
      • K(d);0-0-0,OGATEB::QAB1(A)
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