MESON Chess Problem Database

Problem Display
PID: 52284 (b3R3/3Q2P1/3P2pK/5N1p/1b3k1P/4N2R/6PP/B4nn1 w - - 0 1)

Slesarenko, Anatoly Vasilevich

3rd Prize, Shakhmaty, 1989

b3R3/3Q2P1/3P2pK/5N1p/1b3k1P/4N2R/6PP/B4nn1

#2

12 + 7

4827 FIDE Album (1989-1991) 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd6
      • 2.Qxd6#
    • 1...Be4
      • 2.Be5#
    • 1...Sg3
      • 2.hxg3#
    • 1...gxf5
      • 2.Qxf5#
  • Tries
    • 1.Sd5+?
      • 1...Kg4
        • 2.Sfe3#
        • 2.Sg3#
        • 2.Sd4#
        • 2.Sfe7#
        • 2.Re4#
      • 1...Bxd5!
    • 1.Sg3?
      • threat
        • 2.Qf7#
      • 1...Sxe3
        • 2.Be5#
      • 1...Sxg3
        • 2.hxg3#
      • 1...Be4
        • 2.Rxe4#
      • 1...Bd5
        • 2.Sxd5#
      • 1...Bc3!
    • 1.Qe7?
      • threat
        • 2.Qg5#
        • 2.Qe5#
      • 1...Bxd6
        • 2.Qg5#
        • 2.Qxd6#
      • 1...Sxe3
        • 2.Qg5#
      • 1...Sxh3
        • 2.Qe5#
      • 1...Bc3
        • 2.Qg5#
      • 1...g5
        • 2.Qxg5#
        • 2.Qe5#
      • 1...Sf3!
    • 1.Qf7?
      • threat
        • 2.Sg3#
        • 2.Sd4#
      • 1...Sxe3
        • 2.Sxe3#
      • 1...gxf5
        • 2.Qxf5#
      • 1...Bc3
        • 2.Sd4#
      • 1...Be4
        • 2.Be5#
      • 1...Sg3
        • 2.Sxg3#
        • 2.hxg3#
      • 1...Bd5!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Qf7#
      • 1...Sxe3
        • 2.g3#
      • 1...Be4
        • 2.Se6#
      • 1...Bd5
        • 2.Sxd5#
      • 1...Sg3
        • 2.hxg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(c);OGATE,XP(H)::QAB(J),XB(c)
    • B(g);SBLOCK::B(A)
    • S(a);OGATE::P(C),XS(a)
    • P(f);OGATE,XS(G)::QAR1(J),XP(f)
  • Tries
    • Try
      • S(D);CHECK
      • Refutation
        • B(g);XS(D)
    • Try
      • S(G);
      • Threat
        • QAR(J)
      • Vars
        • S(a);SBLOCK,XS(D)::B(A)
        • S(a);OGATE,XS(G)::P(C),XS(a)
        • B(g);N_GUARD::R1(L),XB(g)
        • B(g);N_GUARD::S(D),XB(g)
      • Refutation
        • B(c);
    • Try
      • Q(J);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);XS(D)::QAB1(J)
        • S(b);XR(E)::QAB1(J)
        • B(c);::QAB1(J)
      • Refutation
        • S(b);
    • Try
      • Q(J);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);XS(D)::QAR(J)+S(G),XS(a)
        • P(f);OGATE,P_SPINP(f),XS(G)::QAR1(J),XP(f)
        • B(c);::QAR(J)+S(G)
        • B(g);SBLOCK::B(A)
      • Refutation
        • B(g);
  • Actual
    • S(G);
    • Threat
      • QAR(J)
    • Vars
      • S(a);N_GUARD,XS(D)::P(B)
      • B(g);SBLOCK::S(G)
      • B(g);N_GUARD::S(D),XB(g)
      • S(a);OGATE::P(C),XS(a)
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