MESON Chess Problem Database

Problem Display
PID: 142094 (5rrb/4Q2p/3pP3/2p2k2/3R1N1P/3PPNpP/6K1/5R2 w - - 0 1)

Chepizhni, Viktor Ivanovich

1st Place, Moscow Championship, 1998

5rrb/4Q2p/3pP3/2p2k2/3R1N1P/3PPNpP/6K1/5R2

#2

11 + 8

6167 Viktor Chepizhny 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Rf6
      • 2.Rd5#
    • 1...Rg5
      • 2.Qxg5#
    • 1...Rg7
      • 2.Rd5#
    • 1...Bg7
      • 2.Qg5#
  • Tries
    • 1.Se5?
      • threat
        • 2.Sfg6#
      • 1...Kxe5
        • 2.Rd5#
      • 1...Bxe5
        • 2.e4#
      • 1...dxe5
        • 2.e4#
      • 1...Rg6
        • 2.Sfxg6#
      • 1...Rg4!
    • 1.Qxf8+?
      • 1...Bf6
        • 2.Rd5#
      • 1...Rxf8!
    • 1.Qf7+?
      • 1...Bf6
        • 2.Rd5#
      • 1...Rxf7!
    • 1.Qxh7+?
      • 1...Rg6
        • 2.Qxg6#
      • 1...Kf6!
  • Keys
    • 1.Sg6!
      • threat
        • 2.Sfe5#
      • 1...Kxg6
        • 2.Qg5#
      • 1...Rxg6
        • 2.Rf4#
      • 1...hxg6
        • 2.Rf4#
      • 1...Be5
        • 2.Sfxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • R(f);S_CUTB(h)::R(G)
    • R(g);N_GUARD::QAR1(K),XR(g)
    • R(g);S_CUTB(h)::R(G)
    • B(h);S_CUTR(g)::QAR1(K)
  • Tries
    • Try
      • S(E);
      • Threat
        • R(A)+S(H)
      • Vars
        • K(c);OGATEB,P-FLIGHT,XS(E)::R1(G)
        • B(h);SBLOCK,XS(E)::P(D)
        • P(d);SBLOCK,XS(E)::P(D)
        • R(g);::R(A)+S(H),XR(g)
      • Refutation
        • R(g);
    • Try
      • Q(K);CHECK,XR(f)
      • Vars
        • B(h);P_SPINB(h)::R(G)
      • Refutation
        • R(g);XQ(K)
    • Try
      • Q(K);CHECK
      • Vars
        • B(h);P_SPINB(h)::R(G)
      • Refutation
        • R(f);XQ(K)
    • Try
      • Q(K);CHECK,XP(e)
      • Vars
        • R(g);N_GUARD,P_SPINR(g)::QAB1(K),XR(g)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • S(H);
    • Threat
      • R(A)+S(E)
    • Vars
      • K(c);S_FLIGHT,XS(H)::QAR1(K)
      • R(g);SBLOCK,XS(H)::R1(G)
      • P(e);SBLOCK,XS(H)::R1(G)
      • B(h);::R(A)+S(E),XB(h)
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