MESON Chess Problem Database

Problem Display
PID: 56502 (5B2/3Kn1b1/1pB1P3/2ppp3/1r1k3r/1p1N1Q1p/bP2PP2/8 w - - 0 1)

Bourd, Evgeny

2nd Prize, StrateGems, 2005

5B2/3Kn1b1/1pB1P3/2ppp3/1r1k3r/1p1N1Q1p/bP2PP2/8

#2

9 + 12

145 StrateGems 2007
23 Die Schwalbe 2011
15323 FIDE Album (2004-2006) 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Qe3#
    • 1...Sf5
      • 2.Qxd5#
    • 1...Sg6
      • 2.Qxd5#
    • 1...Sc8
      • 2.Qxd5#
    • 1...Sg8
      • 2.Qxd5#
    • 1...c4
      • 2.Qe3#
  • Tries
    • 1.Sc1?
      • threat
        • 2.Qd3#
      • 1...Kc4
        • 2.Qc3#
        • 2.Qd3#
      • 1...e4
        • 2.Qc3#
      • 1...c4
        • 2.Qe3#
      • 1...Bb1!
    • 1.Se1?
      • threat
        • 2.Qd3#
      • 1...Kc4
        • 2.Qc3#
        • 2.Qd3#
      • 1...e4
        • 2.Qc3#
      • 1...c4
        • 2.Qe3#
      • 1...Bb1!
    • 1.Sxe5?
      • threat
        • 2.Qe3#
      • 1...Kxe5
        • 2.Bxg7#
      • 1...Bxe5
        • 2.Qd3#
      • 1...Re4
        • 2.Qc3#
      • 1...Sf5
        • 2.Qxd5#
      • 1...Bh6!
  • Keys
    • 1.Sxc5!
      • threat
        • 2.Qc3#
      • 1...Kc4
        • 2.Qc3#
      • 1...Kxc5
        • 2.Qxd5#
      • 1...bxc5
        • 2.Qd3#
      • 1...Rc4
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(d);SBLOCK::QAB1(E)
    • S(k);N_GUARD::QAR1(E),XP(h)
    • P(g);SBLOCK::QAB1(E)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR1(E)
      • Vars
        • P(i);SBLOCK::QAB1(E)
        • P(g);SBLOCK::QAB1(E)
      • Refutation
        • B(a);
    • Try
      • S(D);
      • Threat
        • QAR1(E)
      • Vars
        • P(i);SBLOCK::QAB1(E)
        • P(g);SBLOCK::QAB1(E)
      • Refutation
        • B(a);
    • Try
      • S(D);XP(i)
      • Threat
        • QAB1(E)
      • Vars
        • K(e);OGATEB,S_FLIGHT,XS(D)::B(I),XB(l)
        • B(l);SBLOCK,XS(D)::QAR1(E)
        • R(f);SBLOCK::QAB1(E)
        • S(k);N_GUARD::QAR1(E),XP(h)
      • Refutation
        • B(l);
  • Actual
    • S(D);XP(g)
    • Threat
      • QAB1(E)
    • Vars
      • K(e);P-FLIGHT::QAR1(E)
      • K(e);P_SPINS(k),S_FLIGHT,XS(D)::QAR1(E),XP(h)
      • P(j);SBLOCK,XS(D)::QAR1(E)
      • R(d);SBLOCK::QAB1(E)
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