MESON Chess Problem Database

Problem Display
PID: 117151 (7Q/N1R2p1n/4p3/p3r2q/pk1P4/p4b1R/PnP2B1r/1K2bB2 w - - 0 1)

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

64 Shakhmatnoe obozrenie, 1936

7Q/N1R2p1n/4p3/p3r2q/pk1P4/p4b1R/PnP2B1r/1K2bB2

#2

10 + 13

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf2
      • 2.c3#
    • 1...Bd1
      • 2.Sc6#
    • 1...Be2
      • 2.Bxe1#
    • 1...Bg4
      • 2.Sc6#
    • 1...Bc6
      • 2.Sxc6#
    • 1...Sd1
      • 2.Rc4#
    • 1...Sc4
      • 2.Rxc4#
  • Tries
    • 1.Bxe1+?
      • 1...Rd2
        • 2.Bxd2#
        • 2.c3#
      • 1...Rxe1+!
    • 1.Qb8+?
      • 1...Bb7
        • 2.Sc6#
      • 1...Rb5!
  • Keys
    • 1.d5!
      • threat
        • 2.Qb8#
      • 1...Rxd5
        • 2.Sc6#
      • 1...Bxf2
        • 2.c3#
      • 1...Bxd5
        • 2.Bc5#
      • 1...Sc4
        • 2.Rxc4#
      • 1...Be2
        • 2.Bxe1#
      • 1...Sf8
        • 2.Qxf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • B(a);N_GUARD,XB(E)::P(D)
    • B(e);N_GUARD::S(H)
    • B(e);S_CUTR(c),S_CUTR(i)::B(E),XB(a)
    • B(e);N_GUARD::S(H),XB(e)
    • S(b);N_GUARD::R1(I)
    • S(b);N_GUARD::R1(I),XS(b)
  • Tries
    • Try
      • B(E);CHECK,XB(a)
      • Refutation
        • R(i);CHECK,XB(E)
    • Try
      • Q(J);CHECK
      • Vars
        • B(e);P_SPINB(e)::S(H)
      • Refutation
        • R(i);P_SPINR(i)
  • Actual
    • P(G);
    • Threat
      • QAR(J)
    • Vars
      • R(i);XP(G)::S(H)
      • B(a);N_GUARD,XB(E)::P(D)
      • B(e);XP(G)::B(E)
      • S(b);N_GUARD::R1(I),XS(b)
      • B(e);S_CUTR(c),S_CUTR(i)::B(E),XB(a)
      • S(m);N_GUARD::QAB(J),XS(m)
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