MESON Chess Problem Database

Problem Display
PID: 262171 (q7/5np1/2pNR1bb/4R2p/p2k4/3P3Q/2K5/8 w - - 0 1)

Somma, Francesco

Xadrez Brasileiro, 1932

q7/5np1/2pNR1bb/4R2p/p2k4/3P3Q/2K5/8

#2

6 + 9

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd3+
      • 2.Qxd3#
    • 1...Bf5
      • 2.Sxf5#
    • 1...Be3
      • 2.Qxe3#
    • 1...Sg5
      • 2.Qe3#
    • 1...c5
      • 2.Sb5#
  • Tries
    • 1.Qh4+?
      • 1...Be4
        • 2.Sf5#
        • 2.Qxe4#
      • 1...Bf4!
  • Keys
    • 1.Qf5!
      • threat
        • 2.Re4#
      • 1...Bxf5
        • 2.Sxf5#
      • 1...Sxe5
        • 2.Qxe5#
      • 1...Sxd6
        • 2.Rxd6#
      • 1...Sg5
        • 2.Qf2#
      • 1...c5
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(e);CHECK,OGATE,XP(B)::QAR1(C),XB(e)
    • B(e);N_GUARD::S(E),XB(e)
    • B(f);N_GUARD::QAB1(C),XB(f)
    • S(g);S_CUTB(f)::QAB1(C)
    • P(d);N_GUARD::S(E)
  • Tries
    • Try
      • Q(C);CHECK
      • Refutation
        • B(f);P_SPINB(f)
  • Actual
    • Q(C);N_SPINP(B)
    • Threat
      • R1(D)
    • Vars
      • B(e);P_PINP(B),XQ(C)::S(E),XB(e)
      • S(g);OGATE,XR(D)::QAB1(C),XS(g)
      • S(g);OGATE,XS(E)::R(F),XS(g)
      • S(g);S_CUTB(f)::QAB(C)
      • P(d);N_GUARD::S(E)
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Developed and maintained by Brian Stephenson.
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