MESON Chess Problem Database

Problem Display
PID: 109523 (4R3/4B3/3Pp1p1/3Pk3/K1P1P3/2P2RP1/2n1bP2/1B3Q2 w - - 0 1)

Tolstoy, Stanislav Maksimovic

Canadian Chess Chat, 1982

4R3/4B3/3Pp1p1/3Pk3/K1P1P3/2P2RP1/2n1bP2/1B3Q2

#2

13 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Qxe2#
    • 1...exd5
      • 2.Bf8#
  • Tries
    • 1.Bf6+?
      • 1...Kxe4
        • 2.Qxe2#
      • 1...Kxd6!
    • 1.Bf8?
      • threat
        • 2.Rxe6#
      • 1...Kxe4
        • 2.Qxe2#
      • 1...Sd4!
    • 1.Rf6?
      • threat
        • 2.Rxe6#
      • 1...Kxe4
        • 2.Qxe2#
      • 1...exd5
        • 2.Bd8#
      • 1...Sd4
        • 2.f4#
      • 1...Bg4!
  • Keys
    • 1.Qh3!
      • threat
        • 2.Qxe6#
      • 1...Kxe4
        • 2.Re3#
      • 1...exd5
        • 2.Bf8#
      • 1...Sd4
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);OGATEB,P-FLIGHT,P_SPINS(a),XP(I)::QAR2(B),XB(b)
    • P(d);OGATEB,XP(J)::R(M)+B(L)
  • Tries
    • Try
      • B(L);CHECK,P_PINP(d)
      • Vars
        • K(c);P-FLIGHT,P_SPINS(a),XP(I)::QAR2(B),XB(b)
      • Refutation
        • K(c);N_SPINP(d),S_FLIGHT,XP(K)
    • Try
      • B(L);P_PINP(d)
      • Threat
        • R1(M),XP(d)
      • Vars
        • K(c);OGATEB,P-FLIGHT,P_SPINS(a),XP(I)::QAR2(B),XB(b)
      • Refutation
        • S(a);
    • Try
      • R(E);
      • Threat
        • R1(E),XP(d)
      • Vars
        • K(c);OGATEB,P-FLIGHT,P_SPINS(a),XP(I)::QAR2(B),XB(b)
        • P(d);OGATEB,XP(J)::R(M)+B(L)
        • S(a);::P(C)
      • Refutation
        • B(b);
  • Actual
    • Q(B);
    • Threat
      • QAR1(B),XP(d)
    • Vars
      • K(c);OGATEB,P-FLIGHT,P_SPINS(a),XP(I)::R1(E)
      • P(d);OGATEB,XP(J)::R(M)+B(L)
      • S(a);::QAB(B)
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