MESON Chess Problem Database

Problem Display
PID: 15851 (2q5/2R1Pp1Q/5B2/1PPkNr2/1K1P2B1/8/3PN3/1b2R3 w - - 0 1)

Kovacevic, Marjan

1st Prize, Phenix, 1988

2q5/2R1Pp1Q/5B2/1PPkNr2/1K1P2B1/8/3PN3/1b2R3

#2

13 + 5

702 Phenix 1990
3297 FIDE Album (1986-1988) 1995

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Bf3#
    • 1...Ke6
      • 2.Qxf7#
  • Tries
    • 1.Sc3+?
      • 1...Ke6
        • 2.Qxf7#
      • 1...Kxd4!
    • 1.Sf4+?
      • 1...Kxd4
        • 2.Sf3#
        • 2.Sc6#
      • 1...Rxf4!
    • 1.Sd3?
      • threat
        • 2.Sc3#
      • 1...Ke4
        • 2.Sef4#
      • 1...Ke6
        • 2.Qxf5#
      • 1...Re5
        • 2.Sdf4#
      • 1...Rxf6!
    • 1.Rd7+?
      • 1...Ke4
        • 2.Bf3#
        • 2.Bxf5#
        • 2.Qxf5#
      • 1...Ke6
        • 2.Rd6#
        • 2.Qxf7#
      • 1...Qxd7!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Sc3#
      • 1...Ke4
        • 2.Qxf5#
      • 1...Ke6
        • 2.Sf4#
      • 1...Rxf6
        • 2.Sxf6#
      • 1...Rf3
        • 2.Sb6#
      • 1...Re5
        • 2.Sb6#
      • 1...Be4
        • 2.Qxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(b);P_SPINR(c),S_FLIGHT::B(F)
    • K(b);P_SPINR(c),S_FLIGHT::QAB1(M),XP(d)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(b);P_SPINR(c),S_FLIGHT::QAB1(M),XP(d)
      • Refutation
        • K(b);P-FLIGHT,XP(E)
    • Try
      • S(C);CHECK
      • Refutation
        • R(c);P_PINP(E),XS(C)
    • Try
      • S(I);
      • Threat
        • S(C)
      • Vars
        • K(b);P_SPINR(c),S_FLIGHT::R(A)+S(C)
        • K(b);P_SPINR(c),S_FLIGHT::QAB1(M),XR(c)
        • R(c);N_GUARD::S(I)
      • Refutation
        • R(c);XB(J)
    • Try
      • R(K);CHECK
      • Refutation
        • Q(e);XR(K)
  • Actual
    • S(I);
    • Threat
      • S(C)
    • Vars
      • K(b);P_SPINR(c),S_FLIGHT::QAB1(M),XR(c)
      • K(b);P_SPINR(c),S_FLIGHT::R(A)+S(C),DCHECK
      • R(c);XB(J)::S(I),XR(c)
      • R(c);::S(I)
      • B(a);SBLOCK::QAB(M),XP(d)
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