MESON Chess Problem Database

Problem Display
PID: 51804 (3B1N2/q1p4K/2n5/R1b2R2/1pP1k2N/1p2P1PP/b2P1pr1/5Q2 w - - 0 1)

Markovsky, Grigory F

1st Prize, Antipin JT, 2003

3B1N2/q1p4K/2n5/R1b2R2/1pP1k2N/1p2P1PP/b2P1pr1/5Q2

#2

12 + 10

145 StrateGems 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Qxb1#
    • 1...Bd4
      • 2.Rf4#
    • 1...Bb6
      • 2.Rf4#
    • 1...Be7
      • 2.Rf4#
    • 1...Bxf8
      • 2.Rf4#
    • 1...Se5
      • 2.Rf4#
  • Tries
    • 1.Se6?
      • threat
        • 2.Sg5#
      • 1...Bxe3
        • 2.d3#
      • 1...Be7
        • 2.Rf4#
      • 1...Rxg3!
    • 1.Sd7?
      • threat
        • 2.Sf6#
        • 2.Rf4#
      • 1...Bd6
        • 2.Sf6#
      • 1...Bd4
        • 2.Rf4#
      • 1...Be7
        • 2.Rf4#
      • 1...Bxe3!
    • 1.Bg5?
      • threat
        • 2.d3#
      • 1...Bb1
        • 2.Qxb1#
      • 1...Se5
        • 2.Rf4#
      • 1...Bxe3!
    • 1.Bf6?
      • threat
        • 2.Rf4#
      • 1...Bxe3
        • 2.d3#
      • 1...Bd6!
    • 1.Qe2?
      • threat
        • 2.d3#
      • 1...Bxe3
        • 2.Rf4#
      • 1...Se5
        • 2.Rf4#
      • 1...Bb1!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Rf4#
      • 1...Kxf5
        • 2.Qd3#
      • 1...Bxe3
        • 2.d3#
      • 1...Bd6
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • B(a);N_GUARD::QAB(A),XB(a)
    • B(g);::R1(I)
    • B(g);XS(L)::R1(I)
    • S(h);SBLOCK::R1(I)
  • Tries
    • Try
      • S(L);
      • Threat
        • S(L)
      • Vars
        • B(g);SBLOCK,XP(C)::P(B)
        • B(g);::R1(I)
      • Refutation
        • R(c);XP(D)
    • Try
      • S(L);
      • Threat
        • DUALS(2)
      • Vars
        • B(g);::S(L)
        • B(g);::R1(I)
      • Refutation
        • B(g);XP(C)
    • Try
      • B(K);
      • Threat
        • P(B)
      • Vars
        • B(a);N_GUARD::QAB(A),XB(a)
        • S(h);SBLOCK::R1(I)
      • Refutation
        • B(g);XP(C)
    • Try
      • B(K);
      • Threat
        • R1(I)
      • Vars
        • B(g);SBLOCK,XP(C)::P(B)
      • Refutation
        • B(g);
    • Try
      • Q(A);
      • Threat
        • P(B)
      • Vars
        • B(g);P_SPINB(g),XP(C)::R1(I)
        • S(h);SBLOCK::R1(I)
      • Refutation
        • B(a);
  • Actual
    • S(G);
    • Threat
      • R1(I)
    • Vars
      • K(f);P_SPINB(g),S_FLIGHT,XR(I)::QAB(A)
      • B(g);SBLOCK,XP(C)::P(B)
      • B(g);::S(G)
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