MESON Chess Problem Database

Problem Display
PID: 85840 (2N5/5B1p/7p/5k2/2N5/8/1K6/1bB3Q1 w - - 0 1)

Speckmann, Werner

Schach, 1965

2N5/5B1p/7p/5k2/2N5/8/1K6/1bB3Q1

#2

6 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Se7+?
      • 1...Ke4
        • 2.Qe3#
      • 1...Kf6!
    • 1.Qg5+?
      • 1...Ke4
        • 2.Qd5#
      • 1...hxg5!
  • Keys
    • 1.S4d6+!
      • 1...Ke5
        • 2.Qg7#
      • 1...Kf6
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(B)
      • Refutation
        • P(c);XQ(B)
  • Actual
    • S(D);CHECK
    • Vars
      • K(b);P-FLIGHT::QAB(B)
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