MESON Chess Problem Database

Problem Display
PID: 21326 (4rB2/Q1p1q1nK/2pk1N2/2R1prNp/5p2/1n1b3B/8/3R4 w - - 0 1)

Guidelli, Giorgio

Good Companions (February), 1918

4rB2/Q1p1q1nK/2pk1N2/2R1prNp/5p2/1n1b3B/8/3R4

#2

8 + 12

3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg5+
      • 2.Se4#
    • 1...Rxf6+
      • 2.Se4#
    • 1...Sa1
      • 2.Rxd3#
    • 1...Sa5
      • 2.Rxd3#
    • 1...Se6+
      • 2.Sf7#
  • Keys
    • 1.Qa3!
      • threat
        • 2.Rd5#
      • 1...Rxg5+
        • 2.Se4#
      • 1...Rxf6+
        • 2.Se4#
      • 1...Se6+
        • 2.Sf7#
      • 1...Sxc5
        • 2.Rxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(e);CHECK,XS(D)::S(E)
    • R(e);CHECK,XS(E)::S(D)
    • S(a);N_GUARD::R(A),XB(b)
    • S(k);CHECK,SBLOCK::S(D)
  • Actual
    • Q(F);
    • Threat
      • QAB(F)+R(C),DCHECK
    • Vars
      • R(e);CHECK,XS(D)::S(E)
      • R(e);CHECK,XS(E)::S(D)
      • S(k);CHECK,SBLOCK::S(D)
      • S(a);N_GUARD,P_SPINS(a),XR(C)::R(A),XB(b)
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