MESON Chess Problem Database

Problem Display
PID: 101517 (b1Br4/1nr2p2/R2q1kpP/b3RP2/1B3p1P/2Q2N2/8/7K w - - 0 1)

Guidelli, Giorgio

Good Companions (July), 1917

b1Br4/1nr2p2/R2q1kpP/b3RP2/1B3p1P/2Q2N2/8/7K

#2

10 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qc6
      • 2.Rd5#
    • 1...Sc5
      • 2.Re1#
      • 2.Re2#
      • 2.Re3#
      • 2.Re4#
      • 2.Re8#
    • 1...gxf5
      • 2.Re6#
    • 1...g5
      • 2.hxg5#
  • Tries
    • 1.Sg5?
      • threat
        • 2.Se4#
        • 2.Sh7#
      • 1...Qc6+
        • 2.Se4#
        • 2.Rd5#
      • 1...Sc5+
        • 2.Re4#
      • 1...gxf5
        • 2.Re6#
      • 1...Rc4
        • 2.Sh7#
      • 1...Rh8
        • 2.Se4#
      • 1...Rxc3!
  • Keys
    • 1.Sh2!
      • threat
        • 2.Sg4#
      • 1...Qc6+
        • 2.Rd5#
      • 1...Sc5+
        • 2.Re4#
      • 1...gxf5
        • 2.Re6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • Q(c);P_PINS(C),S_CUTR(g)::QAB(B)+R(F)
    • P(e);SBLOCK,XP(G)::QAB(B)+R(F),DCHECK
    • P(e);OGATE::P(E),XP(e)
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(f);CHECK,S_CUTR(g)::QAB(B)+R(F)
        • P(e);SBLOCK,XP(G)::QAB(B)+R(F),DCHECK
        • R(g);::S(C)
        • R(j);::S(C)
      • Refutation
        • R(g);XQ(B)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • Q(c);CHECK,S_CUTR(g)::QAB(B)+R(F)
      • S(f);CHECK,S_CUTR(g)::QAB(B)+R(F)
      • P(e);SBLOCK,XP(G)::QAB(B)+R(F),DCHECK
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