MESON Chess Problem Database

Problem Display
PID: 21371 (N2n4/R2Bnp1b/q2kPP2/3r4/1P1r1P2/Qp1R2B1/3N4/3K4 w - - 0 1)

Guidelli, Giorgio

2nd Prize, Good Companions (October), 1918

N2n4/R2Bnp1b/q2kPP2/3r4/1P1r1P2/Qp1R2B1/3N4/3K4

#2

12 + 9

3132 The Good Companion Two-Mover 1922
3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb4
      • 2.Qxb4#
    • 1...Rxf4
      • 2.Bxf4#
  • Tries
    • 1.f5+?
      • 1...Rf4
        • 2.Bxf4#
      • 1...Re5!
  • Keys
    • 1.Sc7!
      • threat
        • 2.Se8#
      • 1...Rxb4
        • 2.Qxb4#
      • 1...Rxf4
        • 2.Bxf4#
      • 1...Ra5
        • 2.bxa5#
      • 1...Rb5
        • 2.Sc4#
      • 1...Rc5
        • 2.bxc5#
      • 1...Re5
        • 2.fxe5#
      • 1...Rf5
        • 2.Se4#
      • 1...Rg5
        • 2.fxg5#
      • 1...Rh5
        • 2.f5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • R(b);OGATE,P_SPINR(b),XP(F)::QAB(C),XR(b)
    • R(b);OGATE,P_SPINR(b),XP(G)::B(E),XR(b)
  • Tries
    • Try
      • P(G);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b),S_CUTR(c)::B(E),XR(b)
      • Refutation
        • R(c);P_SPINR(b)
  • Actual
    • S(L);
    • Threat
      • S(L)
    • Vars
      • R(b);OGATE,P_SPINR(b),XP(F)::QAB(C),XR(b)
      • R(b);OGATE,P_SPINR(b),XP(G)::B(E),XR(b)
      • R(c);OGATE,P_SPINR(b)::QAB(C)+P(F),XR(c)
      • R(c);P_SPINR(b),S_CUTQ(d)::S(B)
      • R(c);OGATE,P_SPINR(b)::P(F),XR(c)
      • R(c);OGATE,P_SPINR(b)::P(G),XR(c)
      • R(c);P_SPINR(b),S_CUTB(h)::S(B)
      • R(c);OGATE,P_SPINR(b)::B(E)+P(G),XR(c)
      • R(c);N_GUARD,P_SPINR(b)::B(E)+P(G)
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