MESON Chess Problem Database

Problem Display
PID: 258732 (7Q/8/8/2p5/4BNK1/p4R2/R2B4/1n1kb3 w - - 0 1)

Zalewski, Mieczyzlaw

Szachy, 1979

7Q/8/8/2p5/4BNK1/p4R2/R2B4/1n1kb3

#2

7 + 5

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Rf1?
      • threat
        • 2.Bf3#
        • 2.Rxe1#
      • 1...Sc3
        • 2.Rxe1#
      • 1...Sxd2!
    • 1.Rd3?
      • threat
        • 2.Bf3#
      • 1...Bxd2
        • 2.Qh1#
      • 1...Sxd2
        • 2.Qa1#
      • 1...Sc3!
    • 1.Qd4?
      • threat
        • 2.Bc2#
        • 2.Qa4#
      • 1...Bxd2
        • 2.Rf1#
      • 1...Sxd2
        • 2.Ra1#
      • 1...Sc3
        • 2.Bc2#
      • 1...c4
        • 2.Bc2#
      • 1...cxd4!
  • Keys
    • 1.Qd8!
      • threat
        • 2.Bc2#
      • 1...Bxd2
        • 2.Rf1#
      • 1...Sxd2
        • 2.Ra1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);P_PINB(c)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::R1(C),XB(c)
      • Refutation
        • S(a);XB(B)
    • Try
      • R(C);
      • Threat
        • B(D)
      • Vars
        • B(c);OGATEB,P_SPINB(c),XB(B)::QAR(G)
        • S(a);OGATEB,P_SPINS(a),XB(B)::QAR(G)
      • Refutation
        • S(a);
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • B(c);OGATEB,P_SPINB(c),XB(B)::R(C)
        • S(a);OGATEB,P_SPINS(a),XB(B)::R(A)
        • S(a);::B(D)
        • P(e);::B(D)
      • Refutation
        • P(e);XQ(G)
  • Actual
    • Q(G);
    • Threat
      • B(D)
    • Vars
      • B(c);OGATEB,P_SPINB(c),XB(B)::R(C)
      • S(a);OGATEB,P_SPINS(a),XB(B)::R(A)
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