MESON Chess Problem Database

Problem Display
PID: 108041 (8/3K1p2/3pp2p/bNpkP2N/6Q1/nPn2p2/3P2b1/8 w - - 0 1)

Faria, Oswaldo

Sala T., 1987

8/3K1p2/3pp2p/bNpkP2N/6Q1/nPn2p2/3P2b1/8

#2

7 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.Qd4#
    • 1...dxe5
      • 2.Sf6#
  • Tries
    • 1.Sxc3+?
      • 1...Kxe5
        • 2.Qe4#
        • 2.Qf4#
      • 1...Bxc3!
    • 1.Sc7+?
      • 1...Kxe5
        • 2.Qf4#
      • 1...Bxc7!
    • 1.Qf4?
      • threat
        • 2.Sf6#
      • 1...c4
        • 2.Qd4#
      • 1...Bd8
        • 2.Sxc3#
      • 1...f6
        • 2.Sxf6#
      • 1...Se4!
  • Keys
    • 1.d4!
      • threat
        • 2.Sf6#
      • 1...cxd4
        • 2.Qxd4#
      • 1...Bd8
        • 2.Sxc3#
      • 1...Se4
        • 2.Sf4#
      • 1...f6
        • 2.Sxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • P(f);N_GUARD::QAR1(C)
    • P(h);SBLOCK,XP(E)::S(F)
  • Tries
    • Try
      • S(D);CHECK,XS(c)
      • Refutation
        • B(e);XS(D)
    • Try
      • S(D);CHECK
      • Vars
        • K(g);P-FLIGHT,XP(E)::QAB1(C)
      • Refutation
        • B(e);XS(D)
    • Try
      • Q(C);
      • Threat
        • S(F)
      • Vars
        • P(f);N_GUARD::QAR1(C)
        • B(e);N_GUARD::S(D),XS(c)
        • P(k);::S(F),XP(k)
      • Refutation
        • S(c);
  • Actual
    • P(A);
    • Threat
      • S(F)
    • Vars
      • P(f);OGATE,XP(A)::QAR1(C),XP(f)
      • B(e);N_GUARD::S(D),XS(c)
      • S(c);SBLOCK::S(F)
      • P(k);::S(F),XP(k)
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