MESON Chess Problem Database

Problem Display
PID: 1952 (4R2b/5k2/3K4/4p3/4P2Q/8/8/8 w - - 0 1)

Loyd, Sam

Lynn News, 1859

4R2b/5k2/3K4/4p3/4P2Q/8/8/8

#2

4 + 3

1679 American Chess Nuts 1868
3757 Schachminiaturen I 1902
5206 Sam Loyd and His Chess Problems 1913
3295 Einfuhrung in die Welt des Schachproblem 1984

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe8
      • 2.Qe7#
  • Tries
    • 1.Qg3?
      • 1...Kf6
        • 2.Rf8#
      • 1...Kxe8
        • 2.Qg8#
      • 1...Bf6
        • 2.Qg8#
      • 1...Bg7!
    • 1.Qg5?
      • 1...Kxe8
        • 2.Qe7#
        • 2.Qg8#
      • 1...Bf6
        • 2.Qg8#
      • 1...Bg7!
    • 1.Qh6?
      • threat
        • 2.Rf8#
      • 1...Bg7
        • 2.Qe6#
      • 1...Kxe8!
  • Keys
    • 1.Qg4!
      • 1...Kf6
        • 2.Rf8#
      • 1...Kxe8
        • 2.Qg8#
      • 1...Bg7
        • 2.Qe6#
      • 1...Bf6
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT,XR(D)::QAR1(B)
  • Tries
    • Try
      • Q(B);
      • Vars
        • K(b);P-FLIGHT::R(D)
        • K(b);S_FLIGHT,XR(D)::QAR2(B)
        • B(c);SBLOCK::QAB1(B)
      • Refutation
        • B(c);
    • Try
      • Q(B);
      • Vars
        • B(c);SBLOCK::QAB1(B)
      • Refutation
        • B(c);
    • Try
      • Q(B);
      • Threat
        • R1(D)
      • Vars
        • B(c);SBLOCK::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT,XR(D)
  • Actual
    • Q(B);
    • Vars
      • K(b);P-FLIGHT::R(D)
      • K(b);S_FLIGHT,XR(D)::QAR2(B)
      • B(c);SBLOCK::QAB1(B)
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