MESON Chess Problem Database

Problem Display
PID: 94841 (8/2p3QB/1pP1p3/4Pr2/1N1kN2R/1P2r3/3P4/b2K1nB1 w - - 0 1)

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

Arbejder Magasinet, 1937

8/2p3QB/1pP1p3/4Pr2/1N1kN2R/1P2r3/3P4/b2K1nB1

#2

11 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bc3
      • 2.dxc3#
    • 1...Sh2
      • 2.Bxe3#
      • 2.dxe3#
    • 1...Sg3
      • 2.Bxe3#
      • 2.dxe3#
  • Tries
    • 1.Sc2+?
      • 1...Kd3
        • 2.Sf2#
      • 1...Kd5!
    • 1.Sc3+?
      • 1...Kc5
        • 2.Rc4#
        • 2.Qe7#
      • 1...Rf4!
    • 1.Sc5+?
      • 1...Rf4
        • 2.Sxe6#
      • 1...Kxc5!
    • 1.Sg5+?
      • 1...Rf4
        • 2.Sxe6#
      • 1...Kc5!
    • 1.Sd6+?
      • 1...Kc5
        • 2.Rc4#
      • 1...Rf4!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Qd7#
      • 1...Kxd3
        • 2.Sf2#
      • 1...Kd5
        • 2.Qd7#
      • 1...Rxe5
        • 2.Sc3#
      • 1...Rf7
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(a);OGATE::P(C),XB(a)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(d);N_SPINR(c),P-FLIGHT::S(F)
      • Refutation
        • K(d);N_SPINR(c),P-FLIGHT
    • Try
      • S(F);CHECK
      • Refutation
        • R(e);
    • Try
      • S(F);CHECK
      • Vars
        • R(e);::S(F),XP(g)
      • Refutation
        • K(d);S_FLIGHT,XS(F)
    • Try
      • S(F);CHECK
      • Vars
        • R(e);::S(F),XP(g)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(d);OGATE,S_FLIGHT::R1(G)
      • Refutation
        • R(e);
  • Actual
    • S(E);
    • Threat
      • QAR(J)
    • Vars
      • K(d);N_SPINR(c),P-FLIGHT,XS(E)::S(F)
      • K(d);N_SPINR(c),P-FLIGHT::QAR2(J)
      • R(e);N_GUARD,XP(H)::R(G)+S(F)
      • R(e);N_GUARD::R(G)+S(F)
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