MESON Chess Problem Database

Problem Display
PID: 140164 (8/2np4/P1PNq2R/K2k4/1PprN3/1PB3P1/4Q3/7B w - - 0 1)

Rudenko, Valentin Fedorovich

3rd Prize, BCF 134. Ty., 1973-1974

8/2np4/P1PNq2R/K2k4/1PprN3/1PB3P1/4Q3/7B

#2

12 + 6

102 Probleemblad 1975

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd6
      • 2.Sf6#
    • 1...Rd1
      • 2.Qxc4#
    • 1...Rd2
      • 2.Qxc4#
  • Tries
    • 1.Qxc4+?
      • 1...Ke5
        • 2.Bxd4#
        • 2.Qxd4#
      • 1...Rxc4!
  • Keys
    • 1.Sc8!
      • threat
        • 2.Sf6#
      • 1...Ke5
        • 2.Sed6#
      • 1...Kxc6
        • 2.Se7#
      • 1...Qxe4
        • 2.Qh5#
      • 1...Rxe4
        • 2.Qxc4#
      • 1...Qf6
        • 2.Sxf6#
      • 1...Qe5
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 3
  • Sets
    • Q(d);SBLOCK,XS(K)::B(A)+S(G),DCHECK
    • R(b);N_GUARD::QAB1(B),XP(a)
  • Tries
    • Try
      • Q(B);CHECK,XP(a)
      • Refutation
        • R(b);XQ(B)
  • Actual
    • S(K);
    • Threat
      • B(A)+S(G),DCHECK
    • Vars
      • K(c);P-FLIGHT,P_SPINR(b)::QAR(B)+S(G)
      • K(c);P_SPINQ(d),S_FLIGHT,XP(J)::S(K)
      • Q(d);N_GUARD,P_SPINQ(d),XS(G)::QAR(B)
      • R(b);N_GUARD,P_SPINR(b),XS(G)::QAB1(B),XP(a)
      • Q(d);::B(A)+S(G),DCHECK,XQ(d)
      • Q(d);SBLOCK::S(K)
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