MESON Chess Problem Database

Problem Display
PID: 101617 (3R2K1/4R1p1/b1pn1P2/2qkN3/6Q1/8/8/3N4 w - - 0 1)

Dujardin, Paul

diagrammes, 1990

3R2K1/4R1p1/b1pn1P2/2qkN3/6Q1/8/8/3N4

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bc4
      • 2.Sc3#
  • Tries
    • 1.Sd3?
      • threat
        • 2.Re5#
        • 2.Qe4#
      • 1...gxf6
        • 2.Qe4#
      • 1...Qd4
        • 2.Qe6#
      • 1...Qe3
        • 2.Sc3#
        • 2.Sxe3#
      • 1...Qb4
        • 2.Se3#
        • 2.Re5#
      • 1...Qc3
        • 2.Sxc3#
        • 2.Se3#
        • 2.Qe4#
      • 1...Qc4
        • 2.Se3#
        • 2.Re5#
      • 1...Bxd3!
    • 1.Rxd6+?
      • 1...Kxd6
        • 2.Qe6#
        • 2.Qd7#
      • 1...Qxd6!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Re5#
      • 1...gxf6
        • 2.Sxf6#
      • 1...Qd4
        • 2.Qe6#
      • 1...Sc4
        • 2.Sb6#
      • 1...Se4
        • 2.Sb6#
      • 1...Sb5
        • 2.Sb6#
      • 1...Sf5
        • 2.Sb6#
      • 1...Sb7
        • 2.Sb6#
      • 1...Sf7
        • 2.Sb6#
      • 1...Sc8
        • 2.Sb6#
      • 1...Se8
        • 2.Sb6#
      • 1...Qe3
        • 2.Sxe3#
      • 1...Qc3
        • 2.Sxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 1
  • Sets
    • B(c);S_CUTQ(a)::S(A)
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(f);XP(D)::QAB1(B)
        • Q(a);SBLOCK::QAB1(B)
      • Refutation
        • B(c);XS(C)
    • Try
      • R(F);CHECK,XS(e)
      • Refutation
        • Q(a);XR(F)
  • Actual
    • S(C);N_PINS(e)
    • Threat
      • R1(E)
    • Vars
      • P(f);XP(D)::S(C),XP(f)
      • Q(a);SBLOCK::QAB1(B)
      • S(e);::R(F)+S(C),DCHECK
      • Q(a);N_GUARD::S(A),XQ(a)
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