MESON Chess Problem Database

Problem Display
PID: 75397 (n3RB1b/1K5b/1p2Np2/1ppk1r2/3p1PQ1/1R3P2/2nNP3/8 w - - 0 1)

Kopyl, Valery Volodimirovich

Melnichenko, Viktor Oleksandrovich

The Problemist, 2007

n3RB1b/1K5b/1p2Np2/1ppk1r2/3p1PQ1/1R3P2/2nNP3/8

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf4
      • 2.Sxf4#
    • 1...Re5
      • 2.Rd8#
    • 1...Rg5
      • 2.Rd8#
    • 1...Rh5
      • 2.Rd8#
    • 1...Bg8
      • 2.Qxf5#
    • 1...Sc7
      • 2.Sxc7#
    • 1...d3
      • 2.e4#
    • 1...c4
      • 2.Rxb5#
  • Tries
    • 1.Sxc5?
      • threat
        • 2.Rd8#
      • 1...Rxf4
        • 2.Qe6#
        • 2.Qd7#
      • 1...bxc5!
    • 1.Sg5?
      • threat
        • 2.Rd8#
      • 1...Rxf4
        • 2.Qe6#
        • 2.Qd7#
      • 1...fxg5!
    • 1.Sg7?
      • threat
        • 2.Rd8#
      • 1...Rxf4
        • 2.Qe6#
        • 2.Qd7#
      • 1...Bxg7!
    • 1.Rd3?
      • threat
        • 2.e4#
      • 1...Rxf4
        • 2.Sxf4#
      • 1...Re5
        • 2.Rd8#
      • 1...Rg5
        • 2.Rd8#
      • 1...Rh5
        • 2.Rd8#
      • 1...Se3!
    • 1.Qg7?
      • threat
        • 2.Qd7#
      • 1...Rxf4
        • 2.Sxf4#
      • 1...Bxg7!
    • 1.Qg8?
      • threat
        • 2.Sc7#
        • 2.Rd8#
      • 1...Rxf4
        • 2.Sxf4#
        • 2.Sc7#
      • 1...Sc7
        • 2.Sxc7#
        • 2.Rd8#
      • 1...d3
        • 2.Rd8#
        • 2.e4#
      • 1...Bxg8!
  • Keys
    • 1.Sxd4!
      • threat
        • 2.Rd8#
      • 1...Kxd4
        • 2.Rd3#
      • 1...Rxf4
        • 2.Qd7#
      • 1...Sxd4
        • 2.e4#
      • 1...cxd4
        • 2.Rxb5#

There are these versions: 78529

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • R(f);XP(E)::S(G),XR(f)
    • R(f);::R(I)
    • B(i);N_GUARD::QAR2(F),XR(f)
    • S(j);N_GUARD::S(G),XS(j)
    • P(b);N_GUARD::P(B)
    • P(d);OGATEB::R(C),XP(c)
  • Tries
    • Try
      • S(G);XP(d)
      • Threat
        • R(I)
      • Refutation
        • P(g);XS(G)
    • Try
      • S(G);
      • Threat
        • R(I)
      • Refutation
        • P(h);XS(G)
    • Try
      • S(G);
      • Threat
        • R(I)
      • Refutation
        • B(k);XS(G)
    • Try
      • R(C);P_PINP(b)
      • Threat
        • P(B)
      • Vars
        • R(f);XP(E)::S(G),XR(f)
        • R(f);::R(I)
      • Refutation
        • S(a);
    • Try
      • Q(F);
      • Threat
        • QAR2(F)
      • Vars
        • R(f);XP(E)::S(G),XR(f)
      • Refutation
        • B(k);XQ(F)
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Refutation
        • B(i);XQ(F)
  • Actual
    • S(G);XP(b)
    • Threat
      • R(I)
    • Vars
      • K(e);OGATEB,P-FLIGHT,XS(G)::R1(C)
      • R(f);OGATE,XP(E)::QAR2(F)
      • S(a);SBLOCK,XS(G)::P(B)
      • P(d);OGATEB,SBLOCK,XS(G)::R(C),XP(c)
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