MESON Chess Problem Database

Problem Display
PID: 215950 (r7/8/8/3N4/p7/8/k1P5/2KQ4 w - - 0 1)

Martin, Godefroy Jose

Deutsche Schachzeitung, 1980

r7/8/8/3N4/p7/8/k1P5/2KQ4

#2

4 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sc3+?
      • 1...Ka3
        • 2.Qd6#
      • 1...Ka1!
    • 1.Sb4+?
      • 1...Ka1
        • 2.Qd4#
      • 1...Ka3!
  • Keys
    • 1.Qd4!
      • threat
        • 2.Qb2#
      • 1...Ka3
        • 2.Qa1#
        • 2.Qb2#
      • 1...Rb8
        • 2.Qxa4#
      • 1...a3
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • R(c);N_GUARD::QAR2(B),XP(b)
      • P(b);SBLOCK::S(D)
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