MESON Chess Problem Database

Problem Display
PID: 93144 (8/5p2/2K5/1p2P1Q1/4k3/2P3p1/2PPb1p1/2b3N1 w - - 0 1)

van Beek, Huibrecht

Schaakcourant, 1912

8/5p2/2K5/1p2P1Q1/4k3/2P3p1/2PPb1p1/2b3N1

#2

7 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.d3#
    • 1...Bf3
      • 2.d3#
    • 1...Bg4
      • 2.d3#
    • 1...Bh5
      • 2.d3#
    • 1...f5
      • 2.Qe3#
  • Tries
    • 1.Sh3?
      • threat
        • 2.Qf4#
      • 1...Kf3
        • 2.Qf4#
        • 2.Qf5#
      • 1...Bxd2!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Qg4#
      • 1...Kxf3
        • 2.Qf5#
      • 1...Bxd2
        • 2.Sxd2#
      • 1...Bxf3
        • 2.d3#
      • 1...f5
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(b);N_GUARD::P(C)
    • P(g);SBLOCK::QAR1(F)
  • Tries
    • Try
      • S(A);
      • Threat
        • QAR1(F)
      • Refutation
        • B(a);XP(C)
  • Actual
    • S(A);
    • Threat
      • QAR2(F)
    • Vars
      • K(e);S_FLIGHT,XS(A)::QAR2(F)
      • B(a);XP(C)::S(A),XB(a)
      • B(b);N_GUARD,SBLOCK,XS(A)::P(C)
      • P(g);SBLOCK::QAR1(F)
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