MESON Chess Problem Database

Problem Display
PID: 170476 (8/4Q3/8/pk3B2/8/8/PN6/4K3 w - - 0 1)

Willmann, Paul

Basler Nachrichten, 1953

8/4Q3/8/pk3B2/8/8/PN6/4K3

#2

5 + 2

5454 Near Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qc5+?
      • 1...Ka6
        • 2.Bc8#
      • 1...Kxc5!
  • Keys
    • 1.Sa4!
      • 1...Kxa4
        • 2.Bd7#
      • 1...Kc4
        • 2.Qc5#
      • 1...Ka6
        • 2.Bd3#
      • 1...Kc6
        • 2.Qd7#

Anticipated by 23345(1927), 22287(1934), 22386(1934)

This anticipates 211347(1986), 171470(1988), 23874(1996), 47813(1998), 165528(1998), 16167(2000), 26009(2001)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);S_FLIGHT::B(D)
      • Refutation
        • K(b);P-FLIGHT,XQ(E)
  • Actual
    • S(C);
    • Vars
      • K(b);S_FLIGHT,XS(C)::B(D)
      • K(b);S_FLIGHT::QAR1(E)
      • K(b);S_FLIGHT::B(D)
      • K(b);S_FLIGHT::QAB1(E)
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