MESON Chess Problem Database

Problem Display
PID: 23258 (1bK5/3p4/r1PR1R2/2p1kP1n/r1pNB2n/3P1PP1/2p5/4Q2b w - - 0 1)

Melnichenko, Viktor Oleksandrovich

Rychkov, Vladimir Nikolaevich

2nd Prize, Uralski Problemist, 1996

1bK5/3p4/r1PR1R2/2p1kP1n/r1pNB2n/3P1PP1/2p5/4Q2b

#2

11 + 11

5417 FIDE Album (1995-1997) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc6+
      • 2.Bxc6#
    • 1...Bxf3
      • 2.Bxf3#
    • 1...Sxf3
      • 2.Bxf3#
    • 1...Sxf5
      • 2.Bxf5#
    • 1...Sxg3
      • 2.Qxg3#
    • 1...Sg7
      • 2.f4#
    • 1...cxd3
      • 2.Bxd3#
    • 1...cxd4
      • 2.Bd5#
    • 1...dxc6
      • 2.Bxc6#
      • 2.Rfe6#
  • Keys
    • 1.Qc3!
      • threat
        • 2.Sxc2#
        • 2.Se2#
        • 2.Sb3#
        • 2.Sb5#
      • 1...Rxc6+
        • 2.Sxc6#
      • 1...Sxf3
        • 2.Sxf3#
      • 1...Sxf5
        • 2.Sxf5#
      • 1...Sxg3
        • 2.Se2#
      • 1...Sxf6
        • 2.Sb5#
      • 1...cxd3
        • 2.Qxc5#
      • 1...cxd4
        • 2.Qxd4#
      • 1...c1Q
        • 2.Sc2#
      • 1...c1S
        • 2.Sc2#
        • 2.Se2#
        • 2.Sb3#
        • 2.Sb5#
      • 1...c1B
        • 2.Sc2#
        • 2.Se2#
        • 2.Sb3#
        • 2.Sb5#
      • 1...c1R
        • 2.Sc2#
      • 1...Ra3
        • 2.Sb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 6
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(i);CHECK,OGATE,XP(H)::QAR(A)+B(F),XR(i)
    • B(a);OGATE,XP(C)::QAR(A)+B(F),XB(a)
    • S(e);OGATE,XP(C)::QAR(A)+B(F),XS(e)
    • S(e);OGATE,XP(G)::QAR(A)+B(F),XS(e)
    • S(h);OGATE,XP(D)::QAB(A),XS(h)
    • S(h);N_GUARD::P(C)
    • P(d);OGATE,XP(B)::QAR(A)+B(F),XP(d)
    • P(f);SBLOCK,XS(E)::QAR(A)+B(F)
  • Actual
    • Q(A);
    • Threat
      • DUALS(4)
    • Vars
      • R(i);CHECK,XP(H)::QAB(A)+S(E),DCHECK,XR(i)
      • S(e);XP(C)::QAB(A)+S(E),DCHECK,XS(e)
      • S(e);XP(G)::QAB(A)+S(E),XS(e)
      • S(h);XP(D)::QAB(A)+S(E)
      • S(h);XR(J)::QAB(A)+S(E)
      • P(d);OGATE,XP(B)::QAR2(A),XP(f)
      • P(f);OGATE,P_SPINP(f),XS(E)::QAB1(A),XP(f)
      • P(b);::QAB(A)+S(E)
      • R(c);::QAB(A)+S(E)
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