MESON Chess Problem Database

Problem Display
PID: 114202 (3R3K/3N1Q1p/2p2p2/5p1r/3kPp2/R2b4/1n3bN1/4B3 w - - 0 1)

Stocchi, Ottavio

La Scacchiera, 1953

3R3K/3N1Q1p/2p2p2/5p1r/3kPp2/R2b4/1n3bN1/4B3

#2

8 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe4
      • 2.Bxf2#
    • 1...fxe4
      • 2.Bc3#
    • 1...c5
      • 2.Qd5#
  • Tries
    • 1.Sc5+?
      • 1...Ke5
        • 2.Qe6#
        • 2.Qe8#
        • 2.Qc7#
        • 2.Qe7#
      • 1...Kxc5!
    • 1.Sxf6+?
      • 1...Ke5
        • 2.Qe7#
      • 1...Kc5!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Sb6#
      • 1...Kc4
        • 2.Qb4#
      • 1...Bxe4
        • 2.Qc5#
      • 1...fxe4
        • 2.Se5#
      • 1...Bc4
        • 2.Bxf2#
      • 1...Sc4
        • 2.Bc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(c);SBLOCK,XP(D)::B(A),XB(b)
    • P(f);SBLOCK,XP(D)::B(A)
    • P(h);N_GUARD::QAR1(F)
  • Tries
    • Try
      • S(E);CHECK
      • Refutation
        • K(d);S_FLIGHT,XS(E)
    • Try
      • S(E);CHECK,XP(i)
      • Vars
        • K(d);S_FLIGHT::QAR2(F)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(F);
    • Threat
      • R(G)+S(E)
    • Vars
      • K(d);P-FLIGHT::QAR1(F)
      • B(c);SBLOCK,XP(D)::QAB1(F)
      • P(f);SBLOCK,XP(D)::R(G)+S(E)
      • B(c);SBLOCK::B(A),XB(b)
      • S(a);SBLOCK::B(A)
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