MESON Chess Problem Database

Problem Display
PID: 189862 (8/1Q1K4/8/8/1B6/p3N3/r5Rp/b1k5 w - - 0 1)

Palkoska, Emil

Tidskrift for Schack, 1912

8/1Q1K4/8/8/1B6/p3N3/r5Rp/b1k5

#2

5 + 5

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rd2+
      • 2.Bxd2#
  • Tries
    • 1.Rc2+?
      • 1...Kb1
        • 2.Qh1#
      • 1...Rxc2!
  • Keys
    • 1.Rb2!
      • threat
        • 2.Bd2#
      • 1...Kxb2
        • 2.Bd2#
      • 1...Rxb2
        • 2.Qh1#
      • 1...Bxb2
        • 2.Qh1#
      • 1...axb2
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(c);CHECK,N_GUARD::B(C),XR(c)
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR(D)
      • Refutation
        • R(c);XR(A)
  • Actual
    • R(A);
    • Threat
      • B(C)
    • Vars
      • K(b);S_FLIGHT,XR(A)::QAR(D)+B(C)
      • R(c);SBLOCK,XR(A)::QAR(D)
      • B(a);SBLOCK,XR(A)::QAR(D)
      • P(e);SBLOCK,XR(A)::QAR(D)
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