MESON Chess Problem Database

Problem Display
PID: 21185 (5n2/3bq3/2pr1b2/4p1nQ/1p1Pk3/5R2/BN4Pr/K2R4 w - - 0 1)

Guidelli, Giorgio

Good Companions (March), 1917

5n2/3bq3/2pr1b2/4p1nQ/1p1Pk3/5R2/BN4Pr/K2R4

#2

8 + 11

3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd4
      • 2.Re1#
    • 1...Rd5
      • 2.Bb1#
    • 1...Re6
      • 2.Qg4#
    • 1...Bg4
      • 2.Qxg4#
    • 1...Be8
      • 2.Qg4#
    • 1...Sxf3
      • 2.Qxf3#
    • 1...Sge6
      • 2.Qf5#
    • 1...Sfe6
      • 2.Qg6#
    • 1...exd4
      • 2.Re1#
  • Tries
    • 1.Qg6+?
      • 1...Bf5
        • 2.Qxf5#
      • 1...Sxg6!
    • 1.Qh4+?
      • 1...Bg4
        • 2.Qe1#
        • 2.Qxg4#
      • 1...Rxh4!
  • Keys
    • 1.Sa4!
      • threat
        • 2.Sc5#
      • 1...Rxd4
        • 2.Re1#
      • 1...Sxf3
        • 2.Qxf3#
      • 1...exd4
        • 2.Re1#
      • 1...b3
        • 2.Sc3#
      • 1...Rd5
        • 2.Bb1#
      • 1...Re6
        • 2.Qg4#
      • 1...Sge6
        • 2.Qf5#
      • 1...Sfe6
        • 2.Qg6#
      • 1...c5
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(g);SBLOCK,XP(G)::R(B)
    • R(g);SBLOCK::B(C)
    • R(g);S_CUTB(i)::QAR2(H)
    • B(i);N_GUARD::QAR2(H),XB(i)
    • B(i);N_GUARD::QAR2(H)
    • S(e);OGATE,XR(F)::QAB1(H),XS(e)
    • S(e);OGATE::QAB1(H)
    • S(k);N_GUARD,S_CUTB(i)::QAB(H)
    • P(d);SBLOCK,XP(G)::R(B)
  • Tries
    • Try
      • Q(H);CHECK
      • Vars
        • B(i);N_GUARD,P_SPINB(i)::QAB1(H),XB(i)
      • Refutation
        • S(k);XQ(H)
    • Try
      • Q(H);CHECK
      • Refutation
        • R(a);XQ(H)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • R(g);SBLOCK,XP(G)::R(B)
      • S(e);OGATE,XR(F)::QAB1(H),XS(e)
      • P(d);SBLOCK,XP(G)::R(B)
      • P(b);N_GUARD::S(D)
      • R(g);SBLOCK::B(C)
      • R(g);S_CUTB(i)::QAR2(H)
      • S(e);OGATE::QAB1(H)
      • S(k);N_GUARD,S_CUTB(i)::QAB(H)
      • P(f);::S(D),XP(f)
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