MESON Chess Problem Database

Problem Display
PID: 62932 (q1b2RQ1/3p2K1/1B6/1n2NP2/1RN1k3/2p3Pp/B1P1p1pP/5rn1 w - - 0 1)

Lobusov, Andrey Jakovlevic

2nd Prize, The Problemist, 1979/II

q1b2RQ1/3p2K1/1B6/1n2NP2/1RN1k3/2p3Pp/B1P1p1pP/5rn1

#2

12 + 11

56 The Problemist 1980
3750 FIDE Album (1977-1979) 1984
23 Die Schwalbe 2010

SOLUTION

  • SOUND
  • Tries
    • 1.Sd3?
      • threat
        • 2.Sd2#
      • 1...Kf3
        • 2.Sce5#
      • 1...Sd4!
    • 1.Sg4?
      • threat
        • 2.Sd2#
      • 1...Kf3
        • 2.Sce5#
      • 1...Sd4!
    • 1.Sg6?
      • threat
        • 2.Sd2#
      • 1...Kf3
        • 2.Sce5#
      • 1...Sd4!
  • Keys
    • 1.Sf7!
      • threat
        • 2.Sg5#
      • 1...Kf3
        • 2.Sce5#
      • 1...Kd5
        • 2.Sa5#
      • 1...Kxf5
        • 2.Se3#
      • 1...Rxf5
        • 2.Sd2#
      • 1...Sf3
        • 2.Scd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);
      • Threat
        • R(E)+S(F),DCHECK
      • Vars
        • K(g);S_FLIGHT::S(F)
      • Refutation
        • S(h);
    • Try
      • S(G);
      • Threat
        • R(E)+S(F),DCHECK
      • Vars
        • K(g);S_FLIGHT::S(F)
      • Refutation
        • S(h);
    • Try
      • S(G);
      • Threat
        • R(E)+S(F),DCHECK
      • Vars
        • K(g);S_FLIGHT::S(F)
      • Refutation
        • S(h);
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • K(g);S_FLIGHT::S(F)
      • K(g);S_FLIGHT::B(A)+S(F)
      • K(g);S_FLIGHT,XP(H)::S(F)
      • R(a);SBLOCK,XP(H)::R(E)+S(F),DCHECK
      • S(b);SBLOCK::R(E)+S(F),DCHECK
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