MESON Chess Problem Database

Problem Display
PID: 175291 (1bN5/1B1p4/n4r2/1bk1P3/p1P5/3PKp2/3Q4/6B1 w - - 0 1)

Coppens, JP

Brisbane Courier, 1920

1bN5/1B1p4/n4r2/1bk1P3/p1P5/3PKp2/3Q4/6B1

#2

8 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rb6
      • 2.Kxf3#
    • 1...Rc6
      • 2.Kxf3#
    • 1...Re6
      • 2.Kxf3#
    • 1...Rh6
      • 2.Kxf3#
  • Tries
    • 1.Qa5?
      • threat
        • 2.Qxb5#
      • 1...Rb6
        • 2.Kxf3#
      • 1...Sc7!
  • Keys
    • 1.Qb2!
      • threat
        • 2.Qxb5#
      • 1...Bxc4
        • 2.d4#
      • 1...Rb6
        • 2.Kxf3#
      • 1...Bc6
        • 2.Qb6#
      • 1...Sb4
        • 2.Qd4#
      • 1...Sc7
        • 2.Qa3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • R(f);::B(A)+K(D),XP(a)
    • R(f);P_PINP(F)::B(A)+K(D),XP(a)
  • Tries
    • Try
      • Q(B);P_PINB(c)
      • Threat
        • QAR1(B),XB(c)
      • Vars
        • R(f);::B(A)+K(D),XP(a)
      • Refutation
        • S(e);
  • Actual
    • Q(B);
    • Threat
      • QAR1(B),XB(c)
    • Vars
      • B(c);SBLOCK,XP(E)::P(C)
      • R(f);::B(A)+K(D),XP(a)
      • B(c);OGATE::QAB1(B)
      • S(e);SBLOCK::QAB1(B)
      • S(e);N_GUARD::QAB(B)
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