MESON Chess Problem Database

Problem Display
PID: 108088 (8/8/3pp1K1/4k1n1/6B1/4P3/8/1Q6 w - - 0 1)

Fraisse, A

La Presse, 1899

8/8/3pp1K1/4k1n1/6B1/4P3/8/1Q6

#2

4 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Bf3?
      • threat
        • 2.Qa1#
        • 2.Qb2#
      • 1...Se4
        • 2.Qxe4#
      • 1...d5
        • 2.Qb8#
      • 1...Sxf3!
    • 1.Qa1+?
      • 1...Ke4
        • 2.Qd4#
      • 1...Kd5!
    • 1.Qb2+?
      • 1...Ke4
        • 2.Qd4#
      • 1...Kd5!
  • Keys
    • 1.Bf5!
      • 1...Kd5
        • 2.Qb5#
      • 1...exf5
        • 2.Qxf5#
      • 1...Sf3
        • 2.Qe4#
      • 1...Sh3
        • 2.Qe4#
      • 1...Se4
        • 2.Qxe4#
      • 1...Sf7
        • 2.Qe4#
      • 1...Sh7
        • 2.Qe4#
      • 1...d5
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);N_GUARD::QAR1(A),XS(b)
        • P(c);OGATEB::QAB(A)
      • Refutation
        • S(b);XB(C)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • B(C);
    • Vars
      • K(a);P-FLIGHT::QAR2(A)
      • P(d);OGATE,XB(C)::QAR1(A),XP(d)
      • S(b);N_GUARD::QAR1(A)
      • S(b);N_GUARD::QAR1(A),XS(b)
      • P(c);OGATEB,SBLOCK::QAB(A)
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