MESON Chess Problem Database

Problem Display
PID: 4549 (2R5/8/3k4/3N2p1/4K1Q1/8/8/8 w - - 0 1)

Loyd, Sam

Buffalo Commercial Advertiser, 1879

2R5/8/3k4/3N2p1/4K1Q1/8/8/8

#2

4 + 2

3757 Schachminiaturen I 1902
5206 Sam Loyd and His Chess Problems 1913
5501 Chess Cameos 1936
3295 Einfuhrung in die Welt des Schachproblem 1984
273 Mat Plus 1995
3310 2345 Chess Problems 1997
5637 Prague Series Solving Ty. 2002-2003
5405 Chess Solving Yearbook 2003 2004
5454 Near Snap 2013
3713 Snap 2014

SOLUTION

  • SOUND
  • Tries
    • 1.Sf4?
      • threat
        • 2.Qe6#
      • 1...Ke7
        • 2.Qe6#
      • 1...gxf4!
    • 1.Qxg5?
      • threat
        • 2.Qe7#
      • 1...Ke6
        • 2.Qe7#
      • 1...Kd7!
  • Keys
    • 1.Kf5!
      • 1...Kxd5
        • 2.Qd1#
      • 1...Kd7
        • 2.Ke5#

This anticipates 9653(1907), 196940(1919), 152713(1932), 81245(1966)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • QAR1(B)
      • Vars
        • K(b);S_FLIGHT::QAR1(B)
      • Refutation
        • P(a);XS(C)
    • Try
      • Q(B);XP(a)
      • Threat
        • QAB1(B)
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • K(A);S_FLIGHT
    • Vars
      • K(b);OGATEB,P-FLIGHT,XS(C)::QAR(B)
      • K(b);P-FLIGHT::QAB(B)+K(A)
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