MESON Chess Problem Database

Problem Display
PID: 21306 (KB6/4prpN/1p1p4/1p2knnR/1R6/2PP3p/BQ6/4r3 w - - 0 1)

Mansfield, Comins

Good Companions (February), 1918

KB6/4prpN/1p1p4/1p2knnR/1R6/2PP3p/BQ6/4r3

#2

9 + 11

3132 The Good Companion Two-Mover 1922
3202 Complete Mansfield/I 1996

SOLUTION

  • SOUND
  • Tries
    • 1.Rxg5?
      • threat
        • 2.Qh2#
      • 1...Re4
        • 2.Rxe4#
      • 1...Rf1
        • 2.Re4#
        • 2.Qe2#
      • 1...Rg1
        • 2.Re4#
        • 2.Qe2#
      • 1...Rh1
        • 2.Re4#
        • 2.Qe2#
      • 1...Re2
        • 2.Qxe2#
      • 1...h2
        • 2.Qxh2#
      • 1...Re3!
  • Keys
    • 1.Qf2!
      • threat
        • 2.Rxb5#
        • 2.Qf4#
      • 1...Sxh7
        • 2.Qd4#
      • 1...Rb1
        • 2.Qf4#
      • 1...Rf1
        • 2.Rxb5#
      • 1...Re4
        • 2.Rxb5#
      • 1...Se3
        • 2.Re4#
      • 1...Sg3
        • 2.Rxb5#
      • 1...Sd4
        • 2.cxd4#
      • 1...Sh4
        • 2.Rxb5#
      • 1...Sh6
        • 2.Rxb5#
      • 1...Sf3
        • 2.Qg3#
      • 1...Se4
        • 2.d4#
      • 1...Se6
        • 2.Qxe1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(F);P_PINS(e),XS(f)
      • Threat
        • QAB(B)
      • Vars
        • R(a);N_GUARD::R1(E),XR(a)
        • R(a);N_GUARD::QAR(B),XR(a)
        • P(b);::QAB(B),XP(b)
      • Refutation
        • R(a);
  • Actual
    • Q(B);
    • Threat
      • DUALS(2)
    • Vars
      • S(f);P_SPINS(e),XS(G)::QAB1(B)
      • R(a);::QAB1(B)
      • R(a);::R(E),XP(c)
      • S(e);P_SPINS(f),S_CUTR(a)::R1(E)
      • S(e);P_SPINS(f)::R(E),XP(c)
      • S(e);OGATE,P_SPINS(f)::P(C),XS(e)
      • S(f);P_SPINS(e)::QAB(B)
      • S(f);P_SPINS(e),SBLOCK::P(D)
      • S(f);N_GUARD,P_SPINS(e)::QAR(B),XR(a)
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