MESON Chess Problem Database

Problem Display
PID: 108728 (8/6K1/2P1k3/1R2PN1R/2pPN1b1/2r3p1/2q3r1/BQ5B w - - 0 1)

Kubbel, Leonid Ivanovich (AKA Kubbel, Karl Artur Leonid)

La Settimana Enigmistica, 1934

8/6K1/2P1k3/1R2PN1R/2pPN1b1/2r3p1/2q3r1/BQ5B

#2

11 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Sg5#
    • 1...Qb3
      • 2.Sg5#
    • 1...Qa4
      • 2.Sg5#
    • 1...Qa2
      • 2.Sg5#
    • 1...Qb2
      • 2.Sg5#
    • 1...Qe2
      • 2.Sg5#
    • 1...Qf2
      • 2.Sg5#
    • 1...Rg1
      • 2.Sc5#
    • 1...Rd2
      • 2.Sc5#
    • 1...Re2
      • 2.Sc5#
    • 1...Rf2
      • 2.Sc5#
    • 1...Rh2
      • 2.Sc5#
    • 1...Ra3
      • 2.d5#
    • 1...Rb3
      • 2.d5#
    • 1...Re3
      • 2.d5#
    • 1...Rf3
      • 2.d5#
  • Tries
    • 1.Qxc2?
      • threat
        • 2.Sg5#
      • 1...Rgxc2
        • 2.Sc5#
      • 1...Rcxc2
        • 2.d5#
      • 1...Rd3
        • 2.Qxc4#
      • 1...Bxf5!
    • 1.Qb4?
      • threat
        • 2.Qd6#
        • 2.Qe7#
      • 1...Bxf5
        • 2.Sg5#
        • 2.Qd6#
      • 1...Bxh5!
  • Keys
    • 1.Kf8!
      • threat
        • 2.Sg7#
      • 1...Bxf5
        • 2.Sg5#
      • 1...Qf2
        • 2.Sg5#
      • 1...Rf2
        • 2.Sc5#
      • 1...Rf3
        • 2.d5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 13
  • Sets
    • Q(a);::S(E)
    • R(b);::S(E)
    • R(c);::P(D)
  • Tries
    • Try
      • Q(B);XQ(a)
      • Threat
        • S(E)
      • Vars
        • R(b);XQ(B)::S(E)
        • R(c);XQ(B)::P(D)
        • R(c);OGATE::QAB(B),XP(e)
      • Refutation
        • B(f);XS(H)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Refutation
        • B(f);XR(I)
  • Actual
    • K(K);S_FLIGHT
    • Threat
      • S(H)
    • Vars
      • B(f);SBLOCK,XS(H)::S(E)
      • Q(a);P_PINS(H)::S(E)
      • R(b);P_PINS(H)::S(E)
      • R(c);P_PINS(H)::P(D)
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