MESON Chess Problem Database

Problem Display
PID: 287289 (8/6K1/1p1pk1p1/1B3NP1/3B1P1R/8/4N3/Q7 w - - 0 1)

Usmanov, Rashid R

Mat, 1987

8/6K1/1p1pk1p1/1B3NP1/3B1P1R/8/4N3/Q7

#2

9 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Sc3?
      • 1...Kxf5
        • 2.Bd7#
      • 1...gxf5
        • 2.Qe1#
      • 1...d5!
    • 1.Seg3?
      • 1...Kd5
        • 2.Qa2#
      • 1...d5
        • 2.Qe1#
      • 1...gxf5!
    • 1.Qa2+?
      • 1...Kxf5
        • 2.Sg3#
        • 2.Bd3#
        • 2.Qd5#
      • 1...d5!
    • 1.Qa8?
      • threat
        • 2.Qe4#
      • 1...Kxf5
        • 2.Bd7#
        • 2.Qd5#
      • 1...d5
        • 2.Qc8#
      • 1...gxf5!
  • Keys
    • 1.Qe1!
      • 1...Kd5
        • 2.Sc3#
      • 1...Kxf5
        • 2.Sg3#
      • 1...gxf5
        • 2.Sc3#
      • 1...d5
        • 2.Seg3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Vars
        • K(c);N_GUARD,S_FLIGHT,XS(G)::B(F)
        • P(d);SBLOCK,XS(G)::QAR(A)
      • Refutation
        • P(b);
    • Try
      • S(B);
      • Vars
        • K(c);S_CUTP(b),S_FLIGHT::QAB(A)
        • P(b);SBLOCK::QAR(A)
      • Refutation
        • P(d);XS(G)
    • Try
      • Q(A);CHECK
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • P(b);SBLOCK::QAB(A)
      • Refutation
        • P(d);XS(G)
  • Actual
    • Q(A);
    • Vars
      • K(c);N_GUARD,S_FLIGHT::S(B)
      • K(c);N_GUARD,S_FLIGHT,XS(G)::S(B)
      • P(d);SBLOCK,XS(G)::QAR(A)+S(B)
      • P(b);SBLOCK::QAR(A)+S(B)
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