MESON Chess Problem Database

Problem Display
PID: 159989 (2Q5/8/8/8/4k3/8/4N3/R3K2R w QK - 0 1)

Lasker, Emanuel

Schweizerische Schachzeitung, 1900

2Q5/8/8/8/4k3/8/4N3/R3K2R

#2

5 + 1

45 Schach 2001
5454 Near Snap 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Qf5+?
      • 1...Ke3
        • 2.Ra3#
        • 2.Rh3#
      • 1...Kxf5!
    • 1.Qc6+?
      • 1...Kd3
        • 2.Ra3#
        • 2.Rh3#
      • 1...Ke3
        • 2.Ra3#
        • 2.Rh3#
      • 1...Ke5
        • 2.Ra5#
        • 2.Rh5#
      • 1...Kf5!
  • Keys
    • 1.Qe6+!
      • 1...Kd3
        • 2.0-0-0#
      • 1...Kf3
        • 2.0-0#

This anticipates 21401(1918)

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(E);CHECK
    • Vars
      • K(a);S_FLIGHT::0-0-0
      • K(a);S_FLIGHT::0-0
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