MESON Chess Problem Database

Problem Display
PID: 233842 (1Kb5/2Q2N2/8/6R1/Rb5k/4N2p/5qrP/4B2n w - - 0 1)

Cristoffanini, Guido

Skakbladet, 1937

1Kb5/2Q2N2/8/6R1/Rb5k/4N2p/5qrP/4B2n

#2

8 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bf5
      • 2.Sxf5#
    • 1...Ba6
      • 2.Sf5#
    • 1...Bb7
      • 2.Sf5#
  • Tries
    • 1.Rxb4+?
      • 1...Bg4
        • 2.Sf5#
      • 1...Rg4!
    • 1.Qf4+?
      • 1...Bg4
        • 2.Sf5#
      • 1...Rg4!
    • 1.Qc4+?
      • 1...Bg4
        • 2.Sf5#
      • 1...Rg4!
  • Keys
    • 1.Qd8!
      • threat
        • 2.Qh8#
      • 1...Qg3+
        • 2.Re5#
      • 1...Rxg5
        • 2.Qxg5#
      • 1...Bg4
        • 2.Rc5#
      • 1...Bf5
        • 2.Sxf5#
      • 1...Sg3
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • B(g);N_GUARD::S(C),XB(g)
    • B(g);N_GUARD::S(C)
  • Tries
    • Try
      • R(D);CHECK,XB(e)
      • Vars
        • B(g);P_SPINB(g)::S(C)
      • Refutation
        • R(c);P_SPINR(c)
    • Try
      • Q(F);CHECK,N_PINB(e)
      • Vars
        • B(g);P_SPINB(g)::S(C)
      • Refutation
        • R(c);P_SPINR(c)
    • Try
      • Q(F);CHECK,N_PINB(e)
      • Vars
        • B(g);P_SPINB(g)::S(C)
      • Refutation
        • R(c);P_SPINR(c)
  • Actual
    • Q(F);
    • Threat
      • QAR(F)
    • Vars
      • Q(b);CHECK,S_CUTR(c)::QAB(F)+R(E)
      • R(c);OGATE,P_SPINR(c),XR(E)::QAB1(F),XR(c)
      • B(g);N_SPINB(e),S_CUTR(c)::QAB(F)+R(E)
      • B(g);N_GUARD::S(C),XB(g)
      • S(a);N_SPINQ(b),S_CUTR(c)::QAB(F)+R(E)
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