MESON Chess Problem Database

Problem Display
PID: 143906 (8/rp2B2K/p1k5/3N4/4Q3/bN6/8/3R4 w - - 0 1)

Gulyaev, Aleksandr Pavlovich (aka Grin, AP)

Freischach, 1932

8/rp2B2K/p1k5/3N4/4Q3/bN6/8/3R4

#2

6 + 5

5454 Near Snap 2012
14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Tries
    • 1.Sc3+?
      • 1...Kb6
        • 2.Bd8#
      • 1...Kc7!
    • 1.Qe6+?
      • 1...Kb5
        • 2.Sc3#
      • 1...Bd6!
  • Keys
    • 1.Bd8!
      • threat
        • 2.Sc3#
      • 1...b5+
        • 2.Se7#
      • 1...b6+
        • 2.Sc7#
      • 1...Kb5
        • 2.Sc3#
      • 1...Kd6
        • 2.Sc3#
        • 2.Se3#
        • 2.Sb4#
        • 2.Sf4#
        • 2.Sb6#
        • 2.Sf6#
        • 2.Sc7#
        • 2.Se7#
      • 1...Kd7
        • 2.Sb6#
      • 1...Bd6
        • 2.Qe8#

Anticipated by 26655(1917)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(c);P-FLIGHT::B(E)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);S_FLIGHT::S(D)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • B(E);
    • Threat
      • QAB(C)+S(D)
    • Vars
      • P(e);CHECK,SBLOCK::QAB(C)+S(D),DCHECK
      • P(e);CHECK,SBLOCK::QAB(C)+S(D)
      • K(c);S_FLIGHT::S(D)
      • K(c);S_FLIGHT::R(A)+S(D),DCHECK
      • B(a);SBLOCK::QAB(C)
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