MESON Chess Problem Database

Problem Display
PID: 134162 (b1BNK2n/2p1pp2/1pnk4/1P2R3/1p1p4/8/4RN2/2Q5 w - - 0 1)

Stolev, Nikola

Comm., StrateGems, 2009

b1BNK2n/2p1pp2/1pnk4/1P2R3/1p1p4/8/4RN2/2Q5

#2

8 + 10

145 StrateGems 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Bb7
      • 2.Sxb7#
    • 1...Sg6
      • 2.Sxf7#
  • Tries
    • 1.Sxc6?
      • threat
        • 2.Se4#
      • 1...Bxc6+
        • 2.Qxc6#
      • 1...f5!
    • 1.Qg5?
      • threat
        • 2.Se4#
        • 2.Rd5#
      • 1...Sxe5
        • 2.Qxe5#
      • 1...Sxd8
        • 2.Qxe7#
      • 1...Sa5
        • 2.Qxe7#
      • 1...Sa7
        • 2.Qxe7#
      • 1...Sb8
        • 2.Qxe7#
      • 1...e6
        • 2.Se4#
      • 1...f5!
  • Keys
    • 1.Bb7!
      • threat
        • 2.Qxc6#
      • 1...Bxb7
        • 2.Sxb7#
      • 1...Sxe5
        • 2.Se4#
      • 1...Sxd8
        • 2.Rd5#
      • 1...Sa5
        • 2.Rd5#
      • 1...Sa7
        • 2.Rd5#
      • 1...Sb8
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • B(i);N_GUARD::S(G),XB(i)
    • S(j);N_GUARD::S(G),XP(h)
  • Tries
    • Try
      • S(G);XS(d)
      • Threat
        • S(C)
      • Vars
        • B(i);CHECK,OGATE,XS(G)::QAR1(A),XB(i)
      • Refutation
        • P(h);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(d);OGATE,XR(E)::QAB1(A),XS(d)
        • S(d);N_GUARD,XS(G)::QAB1(A),XP(g)
        • S(d);N_GUARD::QAB1(A),XP(g)
        • P(g);::S(C)
      • Refutation
        • P(h);
  • Actual
    • B(F);
    • Threat
      • QAR1(A),XS(d)
    • Vars
      • B(i);XB(F)::S(G),XB(i)
      • S(d);SBLOCK,XR(E)::S(C)
      • S(d);XS(G)::R1(E)
      • S(d);::R1(E)
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