MESON Chess Problem Database

Problem Display
PID: 97310 (b2b1Q2/2n3nq/4p2P/B2NkBP1/r1p4R/8/5N2/5RK1 w - - 0 1)

Stocchi, Ottavio

Problemi di Ottavio Stocchi, 1995

b2b1Q2/2n3nq/4p2P/B2NkBP1/r1p4R/8/5N2/5RK1

#2

10 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd5
      • 2.Bc3#
    • 1...Sxd5
      • 2.Re4#
    • 1...exd5
      • 2.Re1#
  • Tries
    • 1.Sd3+?
      • 1...Kxd5
        • 2.Qc5#
      • 1...cxd3!
    • 1.Sg4+?
      • 1...Kd4
        • 2.Rd1#
      • 1...Kxd5!
    • 1.Bxc7+?
      • 1...Kxd5
        • 2.Qd6#
      • 1...Bxc7!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Sg4#
      • 1...Kxf5
        • 2.Se7#
      • 1...Qxf5
        • 2.Bc3#
      • 1...Sxf5
        • 2.Re4#
      • 1...exf5
        • 2.Re1#
      • 1...c3
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • B(h);SBLOCK,XS(F)::B(E)
    • S(e);SBLOCK,XS(F)::R1(D)
    • P(d);SBLOCK,XS(F)::R(A)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(c);P-FLIGHT,XS(F)::QAR1(J)
      • Refutation
        • P(b);XS(C)
    • Try
      • S(C);CHECK
      • Vars
        • K(c);S_FLIGHT::R(A)
      • Refutation
        • K(c);P-FLIGHT,XS(F)
    • Try
      • B(E);CHECK,XS(e)
      • Vars
        • K(c);P-FLIGHT,XS(F)::QAR1(J)
      • Refutation
        • B(i);XB(E)
  • Actual
    • Q(J);
    • Threat
      • S(C)
    • Vars
      • K(c);P-FLIGHT,XB(G)::QAR(J)+S(F),DCHECK
      • Q(g);SBLOCK,XB(G)::B(E)
      • S(f);SBLOCK,XB(G)::R1(D)
      • P(d);SBLOCK,XB(G)::R(A)
      • P(b);N_GUARD::S(C)
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