MESON Chess Problem Database

Problem Display
PID: 42433 (Q4K2/3p1b1P/3B2p1/3rnp2/Rb2k1r1/1N3R2/2n2P1N/1B3q2 w - - 0 1)

Rago, Istvan Stefano

7th Comm., BCF 033. Ty., 1939-1940

Q4K2/3p1b1P/3B2p1/3rnp2/Rb2k1r1/1N3R2/2n2P1N/1B3q2

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rf4
      • 2.Re3#
    • 1...Sc6
      • 2.Re3#
  • Tries
    • 1.Bxc2+?
      • 1...Sd3
        • 2.Re3#
        • 2.Rxb4#
      • 1...Qd3!
    • 1.Rxb4+?
      • 1...Sc4
        • 2.Re3#
      • 1...Qc4!
  • Keys
    • 1.h8Q!
      • threat
        • 2.Qxe5#
      • 1...Sxf3
        • 2.Sc5#
      • 1...Sd3
        • 2.Sd2#
      • 1...Sc4
        • 2.Qd4#
      • 1...Sc6
        • 2.Re3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(e);SBLOCK::R1(E)
    • S(g);N_SPINR(f)::R1(E)
  • Tries
    • Try
      • B(A);CHECK,XS(b)
      • Refutation
        • Q(a);P_SPINQ(a)
    • Try
      • R(F);CHECK,N_SPINB(G),XB(c)
      • Vars
        • S(g);::R1(E)
      • Refutation
        • Q(a);P_SPINQ(a)
  • Actual
    • P(H);
    • Threat
      • QAR1(H),XS(g)
    • Vars
      • S(g);XR(E)::S(D)
      • S(g);N_SPINS(b)::S(D)
      • S(g);N_SPINB(c),OGATE::QAR1(H)
      • S(g);N_SPINR(f)::R1(E)
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