MESON Chess Problem Database

Problem Display
PID: 21219 (3nn3/3pKp2/2p3p1/4k3/4p3/2P2PP1/3Q4/8 w - - 0 1)

Guidelli, Giorgio

Good Companions (July), 1917

3nn3/3pKp2/2p3p1/4k3/4p3/2P2PP1/3Q4/8

#2

5 + 8

3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qf4#
    • 1...Sf6
      • 2.Qg5#
    • 1...d5
      • 2.Qf4#
    • 1...f5
      • 2.Qd4#
      • 2.f4#
  • Tries
    • 1.Qd6+?
      • 1...Kf5
        • 2.Qf4#
      • 1...Sxd6!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Qxe4#
      • 1...Kd5
        • 2.Qd4#
      • 1...Kf5
        • 2.Qf4#
      • 1...Sd6
        • 2.Qc5#
      • 1...Sf6
        • 2.Qg5#
      • 1...d5
        • 2.Qf4#
      • 1...f5
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR1(A)
    • S(h);S_CUTP(f)::QAR2(A)
    • P(e);SBLOCK::QAB1(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • S(h);XQ(A)
  • Actual
    • Q(A);P_PINP(a)
    • Threat
      • QAR1(A),XP(a)
    • Vars
      • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
      • S(h);S_CUTP(e)::QAR2(A)
      • S(h);S_CUTP(f)::QAR2(A)
      • P(e);SBLOCK::QAB1(A)
      • P(f);SBLOCK::QAB1(A)
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