MESON Chess Problem Database

Problem Display
PID: 175090 (nN6/N5K1/8/2pk4/5Q2/8/8/8 w - - 0 1)

Blumenthal, Oscar

Schweizerische Schachzeitung, 1902

nN6/N5K1/8/2pk4/5Q2/8/8/8

#2

4 + 3

5454 Near Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qe4+?
      • 1...Kd6
        • 2.Sb5#
      • 1...Kxe4!
  • Keys
    • 1.Sb5!
      • 1...Ke6
        • 2.Qe4#
      • 1...c4
        • 2.Qf5#
      • 1...Sb6
        • 2.Sc7#
      • 1...Sc7
        • 2.Sxc7#

This anticipates 91818(1964)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT::S(B)
      • Refutation
        • K(b);S_FLIGHT,XQ(A)
  • Actual
    • S(B);
    • Vars
      • K(b);S_FLIGHT::QAR2(A)
      • P(a);SBLOCK::QAR2(A)
      • S(c);N_GUARD::S(B)
      • S(c);N_GUARD::S(B),XS(c)
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