MESON Chess Problem Database

Problem Display
PID: 67394 (8/1N3K2/2ppR1p1/3B1p2/2pk4/5R2/7Q/2b5 w - - 0 1)

Kovacevic, Marjan

11th Place, 03. WCCT, 1984-1988

8/1N3K2/2ppR1p1/3B1p2/2pk4/5R2/7Q/2b5

#2

6 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Qxd6#
    • 1...Bb2
      • 2.Qd2#
    • 1...Bd2
      • 2.Qxd2#
    • 1...Ba3
      • 2.Qd2#
    • 1...cxd5
      • 2.Qh8#
  • Tries
    • 1.Qf4+?
      • 1...Kxd5
        • 2.Rxd6#
        • 2.Qxd6#
      • 1...Bxf4!
    • 1.Qxd6?
      • threat
        • 2.Be4#
        • 2.Bxc6#
        • 2.Qc5#
        • 2.Qe5#
      • 1...cxd5
        • 2.Qc5#
        • 2.Qe5#
        • 2.Qb6#
      • 1...Bf4
        • 2.Qc5#
      • 1...Ba3
        • 2.Qe5#
      • 1...c3
        • 2.Ba2#
        • 2.Bb3#
        • 2.Qc5#
        • 2.Qe5#
      • 1...c5
        • 2.Be4#
        • 2.Bc6#
        • 2.Qxc5#
        • 2.Qe5#
      • 1...Be3!
    • 1.Qc2?
      • threat
        • 2.Qxc4#
      • 1...cxd5
        • 2.Qc3#
      • 1...c3
        • 2.Rd3#
        • 2.Qd3#
      • 1...Kxd5!
    • 1.Qe2?
      • threat
        • 2.Qxc4#
      • 1...Kxd5
        • 2.Rxd6#
      • 1...c3
        • 2.Rd3#
        • 2.Qd3#
        • 2.Qc4#
      • 1...cxd5!
  • Keys
    • 1.Qa2!
      • threat
        • 2.Qxc4#
      • 1...Kxd5
        • 2.Rd3#
      • 1...cxd5
        • 2.Qa7#
      • 1...c3
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • K(c);OGATEB,P-FLIGHT,XB(C)::QAR1(A),XP(f)
    • B(a);N_GUARD::QAR2(A)
    • B(a);N_GUARD::QAR2(A),XB(a)
    • P(e);SBLOCK,XB(C)::QAB(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Refutation
        • B(a);XQ(A)
    • Try
      • Q(A);XP(f)
      • Threat
        • DUALS(4)
      • Vars
        • B(a);::QAB1(A)
      • Refutation
        • B(a);
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XP(b)
      • Vars
        • P(e);SBLOCK,XB(C)::QAB1(A)
      • Refutation
        • K(c);P-FLIGHT,XB(C)
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XP(b)
      • Vars
        • K(c);OGATEB,P-FLIGHT,XB(C)::R1(D),XP(f)
      • Refutation
        • P(e);XB(C)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A),XP(b)
    • Vars
      • K(c);P-FLIGHT,P_SPINP(b),XB(C)::R(B)
      • P(e);N_GUARD,SBLOCK,XB(C)::QAB(A)
      • P(b);::QAR1(A)
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