MESON Chess Problem Database

Problem Display
PID: 117490 (1b6/4Q3/8/5p1R/3k4/5R2/4B3/3K4 w - - 0 1)

Mach, Julius Zdenek

Checkmate, 1901

1b6/4Q3/8/5p1R/3k4/5R2/4B3/3K4

#2

5 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...f4
      • 2.Qb4#
  • Tries
    • 1.Rf4+?
      • 1...Kc3
        • 2.Qa3#
        • 2.Qb4#
      • 1...Kd5
        • 2.Bf3#
      • 1...Bxf4!
  • Keys
    • 1.Rhxf5!
      • threat
        • 2.Qb4#
        • 2.Qe3#
      • 1...Be5
        • 2.Qxe5#
      • 1...Bf4
        • 2.Qb4#
      • 1...Bd6
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(b);::QAR2(E)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::B(B)
      • Refutation
        • B(c);XR(C)
  • Actual
    • R(D);XP(b)
    • Threat
      • DUALS(2)
    • Vars
      • B(c);N_GUARD::QAB1(E),XB(c)
      • B(c);::QAR2(E)
      • B(c);::QAB1(E)
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