MESON Chess Problem Database

Problem Display
PID: 51901 (2B5/1K2P3/2NpP1p1/1pNkpRpr/p5r1/Q5nq/5n2/2R3b1 w - - 0 1)

Youngs, Joe Casey

Sp. Prize, StrateGems, 2004

2B5/1K2P3/2NpP1p1/1pNkpRpr/p5r1/Q5nq/5n2/2R3b1

#2

9 + 13

145 StrateGems 2005

SOLUTION

  • SOUND
  • Sets
    • 1...Sfe4
      • 2.Qa2#
  • Tries
    • 1.Sb4+?
      • 1...Kd4
        • 2.Qc3#
      • 1...Rxb4!
    • 1.Qd3+?
      • 1...Rd4
        • 2.Sb4#
        • 2.Qxd4#
      • 1...Sxd3!
    • 1.e8S?
      • threat
        • 2.Sf6#
        • 2.Sc7#
      • 1...dxc5
        • 2.Rxe5#
      • 1...Sfe4
        • 2.Sc7#
        • 2.Qa2#
      • 1...Sge4
        • 2.Sc7#
      • 1...Rh7+!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Sf6#
      • 1...Ke4
        • 2.Qf3#
      • 1...Kxe6
        • 2.Sb6#
      • 1...Sfe4
        • 2.Qa2#
      • 1...Sge4
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(b);S_CUTR(f)::QAB(B)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(h);N_SPINP(i),P-FLIGHT::QAB1(B)
      • Refutation
        • R(f);XS(E)
    • Try
      • Q(B);CHECK
      • Refutation
        • S(b);XQ(B)
    • Try
      • P(H);
      • Threat
        • DUALS(2)
      • Vars
        • P(l);N_GUARD,XS(C)::R1(D),XP(i)
        • S(c);::S(H)
      • Refutation
        • R(k);CHECK
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(h);N_SPINP(i),S_FLIGHT::QAB1(B)
      • K(h);N_SPINP(i),S_FLIGHT,XP(F)::B(I)+S(C)
      • S(b);SBLOCK,S_CUTR(f)::QAB(B)
      • S(c);SBLOCK::S(C)
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