MESON Chess Problem Database

Problem Display
PID: 187940 (8/4nK2/3p4/4kBp1/7N/2P1p3/8/Q7 w - - 0 1)

Gold, Samuel

Pesti Naplo, 1910

8/4nK2/3p4/4kBp1/7N/2P1p3/8/Q7

#2

5 + 5

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Qb1?
      • threat
        • 2.Qe4#
      • 1...Kd5
        • 2.Qb5#
      • 1...Sxf5
        • 2.Qxf5#
      • 1...d5
        • 2.Qb8#
      • 1...Kf4!
  • Keys
    • 1.Qh1!
      • threat
        • 2.Qe4#
      • 1...Kf4
        • 2.Qh2#
      • 1...Sxf5
        • 2.Sg6#
      • 1...d5
        • 2.Qh2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
        • S(e);OGATE,XB(D)::QAR1(A),XS(e)
        • P(d);OGATEB,SBLOCK::QAB(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • K(b);S_FLIGHT::QAB(A)
      • S(e);N_GUARD,SBLOCK,XB(D)::S(C)
      • P(d);SBLOCK::QAB(A)
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