MESON Chess Problem Database

Problem Display
PID: 140279 (3Br3/5B2/K4Rp1/2PpkP2/6Pp/1pR5/3n1Q2/7b w - - 0 1)

Markovsky, Grigory F

1st Prize, Birn MT, 2002

3Br3/5B2/K4Rp1/2PpkP2/6Pp/1pR5/3n1Q2/7b

#2

9 + 8

145 StrateGems 2003

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qe3#
    • 1...Re6+
      • 2.Rxe6#
    • 1...Rxd8
      • 2.Re6#
    • 1...Rf8
      • 2.Re6#
    • 1...Rg8
      • 2.Re6#
    • 1...Rh8
      • 2.Re6#
    • 1...Sf3
      • 2.Qe3#
  • Tries
    • 1.Bc7+?
      • 1...Ke4
        • 2.Qe3#
        • 2.Qf4#
      • 1...Kxf6!
    • 1.fxg6?
      • threat
        • 2.Qf4#
      • 1...Re6+
        • 2.Rxe6#
      • 1...Ke4
        • 2.Qe3#
        • 2.Qf4#
      • 1...Be4
        • 2.Bc7#
      • 1...Sf3
        • 2.Qe3#
      • 1...Se4
        • 2.Rf5#
      • 1...Bf3!
  • Keys
    • 1.Rd3!
      • threat
        • 2.Qd4#
      • 1...Re6+
        • 2.Rxe6#
      • 1...Ke4
        • 2.Qe3#
        • 2.Qd4#
      • 1...Sf3
        • 2.Qe3#
      • 1...Be4
        • 2.Qh2#
      • 1...Se4
        • 2.Rxd5#
      • 1...d4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • K(f);P-FLIGHT::QAR1(A)
    • R(h);CHECK,N_GUARD::R1(G),XR(h)
    • R(h);N_GUARD,XB(I)::R1(G)
    • R(h);N_GUARD::R1(G)
    • S(b);N_GUARD,S_CUTB(a)::QAR2(A)
  • Tries
    • Try
      • B(I);CHECK
      • Refutation
        • K(f);S_FLIGHT,XR(G)
    • Try
      • P(E);XP(g)
      • Threat
        • QAB1(A)
      • Vars
        • R(h);CHECK,N_GUARD::R1(G),XR(h)
        • B(a);SBLOCK::B(I)
        • S(b);N_GUARD,S_CUTB(a)::QAR2(A)
        • S(b);SBLOCK::R1(G)
      • Refutation
        • B(a);
  • Actual
    • R(B);
    • Threat
      • QAB1(A)
    • Vars
      • R(h);CHECK,N_GUARD::R1(G),XR(h)
      • S(b);N_GUARD,S_CUTB(a)::QAR2(A)
      • B(a);SBLOCK::QAB(A)
      • S(b);SBLOCK,S_CUTB(a)::R1(B),XP(e)
      • P(e);::QAB1(A),XP(e)
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