MESON Chess Problem Database

Problem Display
PID: 42206 (K7/4B1bQ/p5rq/pp1N1R2/1Pk5/3RP3/4P1r1/7B w - - 0 1)

Shanshin, Valery Yurevich

1st Prize, Hlas l'udu, 1983

K7/4B1bQ/p5rq/pp1N1R2/1Pk5/3RP3/4P1r1/7B

#2

10 + 8

3748 FIDE Album (1983-1985) 1992

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe3
      • 2.Sxe3#
    • 1...Rf6
      • 2.Rc3#
    • 1...Bc3
      • 2.Rxc3#
    • 1...Bf6
      • 2.Sb6#
    • 1...Bf8
      • 2.Rc3#
  • Tries
    • 1.Bf6?
      • threat
        • 2.Rc3#
      • 1...Bxf6
        • 2.Qc7#
      • 1...axb4
        • 2.Sb6#
      • 1...Qxe3!
    • 1.Rf4+?
      • 1...Bd4
        • 2.Rfxd4#
      • 1...Qxf4!
  • Keys
    • 1.Rf6!
      • threat
        • 2.Sb6#
      • 1...Qxe3
        • 2.Sxe3#
      • 1...Rxe2
        • 2.Rc3#
      • 1...Rxf6
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • Q(g);XP(D)::S(F),XQ(g)
    • R(f);S_CUTB(h)::R1(C)
    • B(h);N_GUARD::R1(C),XB(h)
    • B(h);S_CUTR(f)::S(F)
    • B(h);N_GUARD::R1(C)
  • Tries
    • Try
      • B(H);
      • Threat
        • R1(C)
      • Vars
        • B(h);OGATE,XB(H)::QAR(I)
        • P(c);SBLOCK,XP(E)::S(F)
      • Refutation
        • Q(g);XP(D)
    • Try
      • R(G);CHECK
      • Vars
        • B(h);N_GUARD,P_SPINB(h)::R1(G),XB(h)
      • Refutation
        • Q(g);XR(G)
  • Actual
    • R(G);
    • Threat
      • S(F)
    • Vars
      • Q(g);XP(D)::S(F),XQ(g)
      • R(a);XP(B)::R1(C)
      • R(f);OGATE,XR(G)::QAR2(I)
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