MESON Chess Problem Database

Problem Display
PID: 93152 (5n2/1K3p2/8/1Npk1p2/8/4Q3/8/8 w - - 0 1)

Wolthuis, J

Nederlandse Schaaktijdschrift, 1908

5n2/1K3p2/8/1Npk1p2/8/4Q3/8/8

#2

3 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qd4+?
      • 1...Ke6
        • 2.Qd6#
      • 1...cxd4!
    • 1.Qd3+?
      • 1...Ke6
        • 2.Qd6#
      • 1...Ke5!
  • Keys
    • 1.Qf4!
      • threat
        • 2.Sc7#
      • 1...Ke6
        • 2.Qd6#
      • 1...c4
        • 2.Qxf5#
      • 1...Se6
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • P(a);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(A);
    • Threat
      • S(B)
    • Vars
      • K(b);S_FLIGHT::QAR1(A)
      • P(a);SBLOCK::QAR2(A),XP(c)
      • S(e);SBLOCK::S(B)
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