MESON Chess Problem Database

Problem Display
PID: 21082 (3b3K/2n1n3/rQq3kp/7N/2p4P/8/5R2/3B4 w - - 0 1)

Guidelli, Giorgio

1st HM., Good Companions (February), 1916

3b3K/2n1n3/rQq3kp/7N/2p4P/8/5R2/3B4

#2

6 + 8

15 British Chess Magazine 1916
3132 The Good Companion Two-Mover 1922
3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Qf6+
      • 2.Rxf6#
    • 1...Se6
      • 2.Rf6#
    • 1...Sd5
      • 2.Qb1#
  • Tries
    • 1.Qb1+?
      • 1...Sf5
        • 2.Qxf5#
      • 1...Qe4!
  • Keys
    • 1.Rf8!
      • threat
        • 2.Sf4#
      • 1...Qf6+
        • 2.Rxf6#
      • 1...Scd5
        • 2.Qg1#
      • 1...Se6
        • 2.Rf6#
      • 1...Sed5
        • 2.Qb1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(c);CHECK,N_GUARD::R1(B),XQ(c)
    • S(f);N_SPINQ(c),S_CUTQ(c)::R1(B)
    • S(g);N_GUARD::QAB(E)
  • Tries
    • Try
      • Q(E);CHECK,N_PINQ(c)
      • Vars
        • S(g);N_GUARD,P_SPINS(g)::QAB1(E),XS(g)
      • Refutation
        • Q(c);P_SPINQ(c)
  • Actual
    • R(B);
    • Threat
      • S(D)
    • Vars
      • Q(c);CHECK,N_GUARD::R1(B),XQ(c)
      • S(f);::QAR(E)
      • S(f);N_SPINQ(c),S_CUTQ(c)::R1(B)
      • S(g);N_GUARD::QAB(E)
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