MESON Chess Problem Database

Problem Display
PID: 101598 (4K3/4p3/8/1N1NPRp1/1pBPk1P1/PP6/2n5/7R w - - 0 1)

Bogdanov, Evgeny Mikhailovich

diagrammes, 1999

4K3/4p3/8/1N1NPRp1/1pBPk1P1/PP6/2n5/7R

#2

11 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sa1
      • 2.Re1#
    • 1...Se1
      • 2.Rxe1#
    • 1...Sxa3
      • 2.Re1#
  • Tries
    • 1.Kxe7?
      • 1...Sxa3
        • 2.Re1#
      • 1...Sxd4
        • 2.Sd6#
      • 1...Sa1
        • 2.Re1#
      • 1...Se1
        • 2.Rxe1#
      • 1...Se3
        • 2.Sf6#
      • 1...bxa3!
    • 1.Rd1?
      • 1...Sxa3
        • 2.Re1#
      • 1...Sxd4
        • 2.Rxd4#
      • 1...bxa3
        • 2.Sbc3#
      • 1...Sa1
        • 2.Re1#
      • 1...Se1
        • 2.Rxe1#
      • 1...e6
        • 2.Sd6#
      • 1...Se3!
    • 1.Re1+?
      • 1...Se3
        • 2.Rxe3#
      • 1...Sxe1!
    • 1.axb4?
      • 1...Sxb4
        • 2.Re1#
      • 1...Sxd4
        • 2.Sbc3#
      • 1...Sa1
        • 2.Re1#
      • 1...Se1
        • 2.Rxe1#
      • 1...Sa3
        • 2.Re1#
      • 1...Se3
        • 2.Sdc3#
      • 1...e6!
  • Keys
    • 1.Rh3!
      • 1...Sxa3
        • 2.Re3#
      • 1...Sxd4
        • 2.Re3#
      • 1...bxa3
        • 2.Sdc3#
      • 1...Sa1
        • 2.Re3#
      • 1...Se1
        • 2.Re3#
      • 1...Se3
        • 2.Rxe3#
      • 1...e6
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::R(A)
    • S(a);N_GUARD::R(A),XS(a)
    • S(a);N_GUARD,XP(B)::R(A)
  • Tries
    • Try
      • K(K);P-FLIGHT,XP(e)
      • Vars
        • S(a);N_GUARD,XP(B)::R(A)
        • S(a);SBLOCK,XP(E)::S(G)
        • S(a);N_GUARD::R(A)
        • S(a);N_GUARD::R(A),XS(a)
        • S(a);SBLOCK::S(H)
      • Refutation
        • P(b);XP(B)
    • Try
      • R(A);
      • Vars
        • S(a);N_GUARD,XP(B)::R(A)
        • S(a);OGATE,XP(E)::R1(A),XS(a)
        • P(b);N_GUARD,XP(B)::S(G)
        • S(a);N_GUARD::R(A)
        • S(a);N_GUARD::R(A),XS(a)
        • P(e);N_GUARD::S(G)
      • Refutation
        • S(a);
    • Try
      • R(A);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::R1(A),XS(a)
      • Refutation
        • S(a);XR(A)
    • Try
      • P(B);XP(b)
      • Vars
        • S(a);N_GUARD,XP(B)::R(A)
        • S(a);SBLOCK,XP(E)::S(G)
        • S(a);N_GUARD::R(A)
        • S(a);N_GUARD::R(A),XS(a)
        • S(a);SBLOCK::S(H)
      • Refutation
        • P(e);
  • Actual
    • R(A);
    • Vars
      • S(a);N_GUARD,XP(B)::R1(A)
      • S(a);N_GUARD,XP(E)::R1(A)
      • P(b);N_GUARD,XP(B)::S(H)
      • S(a);N_GUARD::R1(A)
      • S(a);N_GUARD::R1(A),XS(a)
      • P(e);N_GUARD::S(H)
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