MESON Chess Problem Database

Problem Display
PID: 15773 (7b/Kp2Bp2/1p2RP2/R2NNk1p/B2P4/2r1p3/3qp1Q1/1b3r2 w - - 0 1)

Lobusov, Andrey Jakovlevic

1st Prize, Sovietsky Krim, 1987

7b/Kp2Bp2/1p2RP2/R2NNk1p/B2P4/2r1p3/3qp1Q1/1b3r2

#2

10 + 12

3297 FIDE Album (1986-1988) 1995
56 The Problemist 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe6
      • 2.Bd7#
    • 1...Bxf6
      • 2.Rxf6#
    • 1...h4
      • 2.Qg4#
    • 1...fxe6
      • 2.Qg6#
  • Tries
    • 1.Sf3?
      • threat
        • 2.Re5#
      • 1...Kxe6
        • 2.Sf4#
      • 1...Qxd4
        • 2.Sxd4#
      • 1...fxe6
        • 2.Sh4#
      • 1...Bxf6!
    • 1.Sc4?
      • threat
        • 2.Re5#
      • 1...Kxe6
        • 2.Sc7#
      • 1...Bxf6
        • 2.Rxf6#
      • 1...fxe6
        • 2.Sd6#
      • 1...Qxd4!
    • 1.Qg6+?
      • 1...Kxe6
        • 2.Bd7#
      • 1...fxg6!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Re5#
      • 1...Kxe6
        • 2.Qe4#
      • 1...Bxf6
        • 2.Rxf6#
      • 1...fxe6
        • 2.Sxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • K(g);OGATEB,S_FLIGHT,XR(G)::B(B)
    • B(l);OGATE,XP(H)::R1(G),XB(l)
    • P(h);N_GUARD::QAB1(A)
    • P(k);N_GUARD,SBLOCK,XR(G)::QAB1(A)
  • Tries
    • Try
      • S(F);
      • Threat
        • R1(G)
      • Vars
        • K(g);S_FLIGHT,XR(G)::S(E)
        • Q(c);XP(C)::S(F),XQ(c)
        • P(k);SBLOCK,XR(G)::S(F)
      • Refutation
        • B(l);XP(H)
    • Try
      • S(F);
      • Threat
        • R1(G)
      • Vars
        • K(g);S_FLIGHT,XR(G)::S(E)
        • B(l);OGATE,XP(H)::R1(G),XB(l)
        • P(k);SBLOCK,XR(G)::S(F)
      • Refutation
        • Q(c);XP(C)
    • Try
      • Q(A);CHECK
      • Vars
        • K(g);S_FLIGHT,XR(G)::B(B)
      • Refutation
        • P(k);XQ(A)
  • Actual
    • S(F);
    • Threat
      • R1(G)
    • Vars
      • K(g);S_FLIGHT,XR(G)::QAR2(A)
      • B(l);OGATE,XP(H)::R1(G),XB(l)
      • P(k);SBLOCK,XR(G)::R(D)+S(E),DCHECK,XP(f)
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