MESON Chess Problem Database

Problem Display
PID: 104875 (8/Q7/4B3/7K/2p1kp2/5N2/5P2/5b2 w - - 0 1)

St Maurice, Ephrem

La Presse, 1933

8/Q7/4B3/7K/2p1kp2/5N2/5P2/5b2

#2

5 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bd3
      • 2.Qb7#
      • 2.Qa8#
  • Tries
    • 1.Qc5?
      • threat
        • 2.Qd5#
      • 1...Kd3
        • 2.Qxc4#
      • 1...Kxf3!
  • Keys
    • 1.Qa2!
      • 1...Kd3
        • 2.Qxc4#
      • 1...Kxf3
        • 2.Bd5#
      • 1...Be2
        • 2.Qxe2#
      • 1...Bg2
        • 2.Qe2#
      • 1...Bd3
        • 2.Qa8#
      • 1...Bh3
        • 2.Qe2#
      • 1...c3
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);
      • Threat
        • QAB1(E)
      • Vars
        • K(c);S_FLIGHT::QAB1(E),XP(b)
      • Refutation
        • K(c);S_FLIGHT,XS(B)
  • Actual
    • Q(E);
    • Vars
      • K(c);S_FLIGHT::QAB1(E),XP(b)
      • K(c);S_FLIGHT,XS(B)::B(D)
      • B(a);N_GUARD,P_PINS(B)::QAR2(E),XB(a)
      • B(a);N_GUARD::QAR2(E)
      • B(a);SBLOCK::QAB(E)
      • P(b);OGATE::QAB1(E)
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