MESON Chess Problem Database

Problem Display
PID: 101341 (6nN/7N/4kPr1/pKQ3p1/8/rb1R1p2/B3q1Pb/4R2n w - - 0 1)

Guidelli, Giorgio

Good Companions, 1918

6nN/7N/4kPr1/pKQ3p1/8/rb1R1p2/B3q1Pb/4R2n

#2

9 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf6
      • 2.Sxg5#
    • 1...Be5
      • 2.Qc8#
    • 1...Bc4+
      • 2.Bxc4#
    • 1...Bd5
      • 2.Qxd5#
    • 1...Sxf6
      • 2.Sf8#
  • Tries
    • 1.Rxe2+?
      • 1...Be5
        • 2.Rxe5#
        • 2.Qxe5#
        • 2.Qc8#
      • 1...fxe2!
  • Keys
    • 1.g4!
      • threat
        • 2.Qf5#
      • 1...Bc4+
        • 2.Bxc4#
      • 1...Rxf6
        • 2.Sxg5#
      • 1...Sxf6
        • 2.Sf8#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Qe5
        • 2.Rd6#
      • 1...Be5
        • 2.Qc8#
      • 1...Sg3
        • 2.Qd6#
      • 1...Sh6
        • 2.Qe7#
      • 1...Se7
        • 2.Qxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(j);N_GUARD,SBLOCK,XP(G)::S(H),XP(h)
    • B(c);N_SPINQ(b),SBLOCK::QAB(F)
    • B(e);CHECK,N_PINR(D),OGATE::B(B),XB(e)
    • B(e);N_GUARD::QAB1(F),XB(e)
    • S(k);SBLOCK,XP(G)::S(H)
  • Tries
    • Try
      • R(A);CHECK,N_SPINR(D),XQ(b)
      • Refutation
        • P(f);XR(A)
  • Actual
    • P(C);
    • Threat
      • QAB1(F)
    • Vars
      • B(e);CHECK,N_PINR(D),OGATE::B(B),XB(e)
      • R(j);N_GUARD,SBLOCK,XP(G)::S(H),XP(h)
      • S(k);SBLOCK,XP(G)::S(H)
      • B(e);N_GUARD::QAB1(F),XB(e)
      • Q(b);N_PINR(D),P_PINQ(F)::R1(D)
      • B(c);N_SPINQ(b),SBLOCK::QAB(F)
      • S(a);S_CUTB(c)::QAR1(F)
      • S(k);N_GUARD::QAR1(F)
      • S(k);N_GUARD::QAR1(F),XS(k)
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