MESON Chess Problem Database

Problem Display
PID: 61071 (8/2b1NpnB/K4Qrq/6nR/3Nk3/5p1p/4P3/2B5 w - - 0 1)

Guidelli, Giorgio

Good Companions (July), 1917

8/2b1NpnB/K4Qrq/6nR/3Nk3/5p1p/4P3/2B5

#2

8 + 9

3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Sets
    • 1...Bb6
      • 2.Qf4#
  • Tries
    • 1.Sb5?
      • threat
        • 2.Sc3#
      • 1...Ba5
        • 2.Sd6#
      • 1...Be5
        • 2.Qc6#
      • 1...fxe2!
    • 1.Sdc6?
      • threat
        • 2.Qd4#
      • 1...Be5
        • 2.Qxe5#
      • 1...Bb6
        • 2.Qe5#
        • 2.Qf4#
      • 1...S5e6
        • 2.Qxf3#
      • 1...Sf5
        • 2.Qxf5#
      • 1...S7e6
        • 2.Qf5#
      • 1...fxe2!
    • 1.Rh4+?
      • 1...Bf4
        • 2.Rxf4#
      • 1...Qxh4!
    • 1.Qc6+?
      • 1...Ke5
        • 2.Sxf3#
      • 1...Kxd4!
  • Keys
    • 1.Sb3!
      • threat
        • 2.Sc5#
      • 1...Be5
        • 2.Qc6#
      • 1...Bb6
        • 2.Qf4#
      • 1...Bd6
        • 2.Qd4#
      • 1...S5e6
        • 2.Qxf3#
      • 1...S7e6
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(g);N_PINQ(F)::QAR1(F)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • B(g);N_GUARD::S(C)
        • B(g);SBLOCK::QAB(F)
      • Refutation
        • P(a);XP(B)
    • Try
      • S(C);N_SPINQ(F)
      • Threat
        • QAR1(F)
      • Vars
        • B(g);N_GUARD::QAR1(F),XB(g)
        • S(d);N_GUARD::QAB1(F),XP(a)
        • S(i);N_GUARD,N_SPINR(e)::QAB1(F),XS(i)
        • S(i);N_GUARD::QAB1(F)
      • Refutation
        • P(a);XP(B)
    • Try
      • R(D);CHECK
      • Vars
        • B(g);N_GUARD,P_SPINB(g)::R1(D),XB(g)
      • Refutation
        • Q(f);XR(D)
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);N_SPINR(e),P-FLIGHT,P_SPINS(d)::S(C),XP(a)
      • Refutation
        • K(c);N_SPINR(e),P-FLIGHT,XS(C)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • B(g);SBLOCK::QAB(F)
      • B(g);N_PINQ(F)::QAR1(F)
      • S(d);N_PINQ(F)::QAB1(F),XP(a)
      • S(i);N_PINQ(F)::QAB1(F)
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