MESON Chess Problem Database

Problem Display
PID: 21363 (7n/8/4p3/1PNk4/2p5/1N4Q1/6K1/8 w - - 0 1)

Corrias, Antonio G

Good Companions (November), 1918

7n/8/4p3/1PNk4/2p5/1N4Q1/6K1/8

#2

5 + 4

3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Tries
    • 1.Qf4?
      • threat
        • 2.Qd4#
      • 1...e5
        • 2.Qd2#
      • 1...cxb3!
    • 1.Qg5+?
      • 1...e5
        • 2.Qd2#
        • 2.Qd8#
      • 1...Kd6!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Sf6#
        • 2.Qe5#
      • 1...Ke4
        • 2.Qf3#
      • 1...cxb3
        • 2.Qd3#
      • 1...c3
        • 2.Qd3#
      • 1...e5
        • 2.Qxe5#
      • 1...Sg6
        • 2.Sf6#
      • 1...Sf7
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • P(c);SBLOCK::QAR(C)
      • Refutation
        • P(a);XS(B)
    • Try
      • Q(C);CHECK
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(E);
    • Threat
      • DUALS(2)
    • Vars
      • K(b);S_FLIGHT::QAB1(C)
      • P(a);N_GUARD,XS(B)::QAR2(C)
      • P(a);N_GUARD::QAR2(C)
      • P(c);::QAR1(C),XP(c)
      • S(d);::S(E)
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