MESON Chess Problem Database

Problem Display
PID: 39390 (1N3K1B/1n1p4/B2P2Qp/p4n1R/4k3/rR3rp1/8/1b1N4 w - - 0 1)

Zilahi, Zoltan

2nd HM., BCF 022. Ty., 1936-1937

1N3K1B/1n1p4/B2P2Qp/p4n1R/4k3/rR3rp1/8/1b1N4

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb3
      • 2.Qxf5#
    • 1...Rc3
      • 2.Qxf5#
    • 1...Rd3
      • 2.Qxf5#
    • 1...Re3
      • 2.Qxf5#
    • 1...Rf4
      • 2.Bxb7#
  • Tries
    • 1.Rh4+?
      • 1...Rf4
        • 2.Bxb7#
      • 1...Kd5!
    • 1.Qg4+?
      • 1...Rf4
        • 2.Bxb7#
      • 1...Kd5!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qe5#
      • 1...Kf4
        • 2.Rh4#
      • 1...Kd5
        • 2.Qe5#
      • 1...Rfxb3
        • 2.Qxf5#
      • 1...Sfxd6
        • 2.Qxf3#
      • 1...Rc3
        • 2.Qxf5#
      • 1...Rd3
        • 2.Qxf5#
      • 1...Re3
        • 2.Qxf5#
      • 1...Se3
        • 2.Sc3#
      • 1...Sd4
        • 2.Re5#
      • 1...Sh4
        • 2.Bxb7#
      • 1...Se7
        • 2.Qxf3#
      • 1...Sg7
        • 2.Bxb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • R(c);N_GUARD,XR(B)::QAB1(F),XS(g)
    • R(c);N_GUARD::QAB1(F),XS(g)
    • R(c);SBLOCK::B(D),XS(i)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • R(c);P_SPINR(c)::B(D),XS(i)
      • Refutation
        • K(e);N_SPINS(g),S_FLIGHT
    • Try
      • Q(F);CHECK,N_PINS(g)
      • Vars
        • R(c);P_SPINR(c)::B(D),XS(i)
      • Refutation
        • K(e);P_SPINS(g),S_FLIGHT
  • Actual
    • Q(F);N_PINS(g)
    • Threat
      • QAR1(F)
    • Vars
      • K(e);P-FLIGHT,P_SPINS(g)::R(C)
      • K(e);P_SPINS(g),S_FLIGHT::QAR1(F)
      • R(c);N_GUARD,XR(B)::QAB1(F),XS(g)
      • S(g);OGATE,P_PINQ(F),XP(E)::QAB1(F),XR(c)
      • R(c);N_GUARD::QAB1(F),XS(g)
      • S(g);P_PINQ(F),SBLOCK,S_CUTR(c)::S(A)
      • S(g);OGATE,P_PINQ(F),SBLOCK::R1(C)
      • S(g);P_PINQ(F)::B(D),XS(i)
      • S(g);OGATE,P_PINQ(F)::QAB1(F),XR(c)
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