MESON Chess Problem Database

Problem Display
PID: 41364 (3R1b2/1N6/3p3r/4N1Rp/1P1k4/3P1Pp1/8/1K2Q2b w - - 0 1)

Gelpernas, Boris

Leun, Evgeny

1st Prize, Rjazansky komsomolets, 1983

3R1b2/1N6/3p3r/4N1Rp/1P1k4/3P1Pp1/8/1K2Q2b

#2

9 + 7

3748 FIDE Album (1983-1985) 1992

SOLUTION

  • SOUND
  • Tries
    • 1.Kc2?
      • threat
        • 2.Sc6#
        • 2.Qe4#
      • 1...Bxf3
        • 2.Sxf3#
      • 1...d5
        • 2.Qg1#
        • 2.Qe4#
      • 1...Kd5!
    • 1.Rc8?
      • threat
        • 2.Qe4#
      • 1...Kd5
        • 2.Sc6#
      • 1...d5
        • 2.Qg1#
      • 1...Bxf3!
    • 1.Qc1?
      • threat
        • 2.Qc5#
      • 1...Kd5
        • 2.Qc4#
      • 1...d5!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Sc6#
      • 1...Kd5
        • 2.Qe4#
      • 1...Bxf3
        • 2.Sxf3#
      • 1...d5
        • 2.Sb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • B(a);XP(D)::S(F),XB(a)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(I);N_PINP(e)
      • Threat
        • QAR1(B)
      • Vars
        • K(c);P-FLIGHT::R(G)+S(F)
        • P(e);SBLOCK::QAB(B)
      • Refutation
        • B(a);XP(D)
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(c);P-FLIGHT::QAB1(B)
      • Refutation
        • P(e);
  • Actual
    • S(H);
    • Threat
      • S(F)
    • Vars
      • K(c);P-FLIGHT::QAB1(B)
      • B(a);XP(D)::S(F),XB(a)
      • P(e);::S(H)
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