MESON Chess Problem Database

Problem Display
PID: 69917 (7q/3Rp2n/2p3Q1/BN1P4/1PkP4/2N4p/b2p4/3B3K w - - 0 1)

Melnichenko, Viktor Oleksandrovich

Rudenko, Valentin Fedorovich

5th Prize, Uralski Problemist, 1999

7q/3Rp2n/2p3Q1/BN1P4/1PkP4/2N4p/b2p4/3B3K

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bb3
      • 2.Be2#
    • 1...cxd5
      • 2.Rc7#
  • Tries
    • 1.Qc2?
      • threat
        • 2.Be2#
      • 1...Qxd4
        • 2.Sa3#
      • 1...cxb5
        • 2.Se2#
      • 1...Qe5!
    • 1.Qe4?
      • threat
        • 2.Qe2#
      • 1...Qxd4
        • 2.Qxd4#
      • 1...cxb5
        • 2.Rc7#
      • 1...Qe5
        • 2.dxe5#
      • 1...Bb1!
  • Keys
    • 1.Se2!
      • threat
        • 2.Sa3#
      • 1...Kxb5
        • 2.Qxc6#
      • 1...cxb5
        • 2.Qc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(a);SBLOCK::B(A)
    • P(e);OGATEB,XP(H)::R(J)
  • Tries
    • Try
      • Q(I);
      • Threat
        • B(A)
      • Vars
        • Q(h);SBLOCK,XP(E)::S(G)
        • P(e);SBLOCK,XS(G)::QAR(I)+S(C)
      • Refutation
        • Q(h);
    • Try
      • Q(I);
      • Threat
        • QAB(I)
      • Vars
        • Q(h);OGATE,P_SPINQ(h),XP(E)::QAR1(I),XQ(h)
        • P(e);OGATEB,XS(G)::R(J)
        • Q(h);OGATE::QAR(I)+P(E),XQ(h)
      • Refutation
        • B(a);
  • Actual
    • S(C);
    • Threat
      • S(G)
    • Vars
      • K(d);S_FLIGHT,XS(G)::QAB1(I),XP(e)
      • P(e);SBLOCK,XS(G)::QAR2(I)
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