MESON Chess Problem Database

Problem Display
PID: 146075 (5n1b/3Q4/1p1K4/Bpppp3/3k1p2/2N5/5P2/rr2RB2 w - - 0 1)

Kopyl, Valery Volodimirovich

The Problemist, 2011

5n1b/3Q4/1p1K4/Bpppp3/3k1p2/2N5/5P2/rr2RB2

#2

7 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Sxb5#
    • 1...Rd1
      • 2.Sxb5#
    • 1...b4
      • 2.Sb5#
  • Tries
    • 1.Qh3?
      • threat
        • 2.Qd3#
      • 1...Rd1
        • 2.Sxb5#
      • 1...c4
        • 2.Bxb6#
      • 1...e4
        • 2.Qxh8#
      • 1...f3!
    • 1.Qxb5?
      • threat
        • 2.Qd3#
      • 1...Rxb5
        • 2.Sxb5#
      • 1...c4
        • 2.Qxd5#
      • 1...e4
        • 2.Se2#
      • 1...Rd1!
  • Keys
    • 1.Qf5!
      • threat
        • 2.Qd3#
      • 1...Rd1
        • 2.Sxb5#
      • 1...c4
        • 2.Se2#
      • 1...e4
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(b);N_GUARD::S(D),XP(e)
    • P(e);S_CUTR(b)::S(D)
  • Tries
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Vars
        • R(b);N_GUARD::S(D),XP(e)
        • P(f);OGATEB::B(E),XP(i)
        • P(h);OGATEB::QAB(G),XB(k)
      • Refutation
        • P(d);
    • Try
      • Q(G);XP(e)
      • Threat
        • QAR1(G)
      • Vars
        • R(b);XQ(G)::S(D),XR(b)
        • P(f);OGATE::QAR1(G),XP(g)
        • P(h);SBLOCK::S(D)
      • Refutation
        • R(b);
  • Actual
    • Q(G);
    • Threat
      • QAR1(G)
    • Vars
      • R(b);N_GUARD::S(D),XP(e)
      • P(f);SBLOCK::S(D)
      • P(h);OGATE::QAR1(G),XP(g)
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