MESON Chess Problem Database

Problem Display
PID: 140360 (6Q1/8/8/nR6/P1Rrp3/3k4/8/4K3 w - - 0 1)

Lakyunas, G

Shakhmaty v SSSR, 1949

6Q1/8/8/nR6/P1Rrp3/3k4/8/4K3

#2

5 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Qg3#
    • 1...Sb3
      • 2.Rxb3#
    • 1...Sc6
      • 2.Rb3#
    • 1...Sb7
      • 2.Rb3#
  • Keys
    • 1.Qg2!
      • threat
        • 2.Qe2#
      • 1...Ke3
        • 2.Qg3#
      • 1...Kxc4
        • 2.Qc2#
      • 1...Rxc4
        • 2.Qd2#
      • 1...Sxc4
        • 2.Rb3#
      • 1...e3
        • 2.Qc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • K(a);P-FLIGHT::QAR2(E)
    • S(d);N_GUARD::R(D),XS(d)
    • S(d);N_GUARD::R(D)
  • Actual
    • Q(E);
    • Threat
      • QAB1(E)
    • Vars
      • K(a);P-FLIGHT::QAR2(E)
      • K(a);S_FLIGHT,XR(C)::QAR2(E)
      • R(b);SBLOCK,XR(C)::QAR1(E)
      • S(d);N_GUARD,SBLOCK,XR(C)::R(D)
      • P(c);SBLOCK::QAB1(E)
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