MESON Chess Problem Database

Problem Display
PID: 137023 (8/8/8/1pB4K/8/3p1B1N/R2p4/4Nk2 w - - 0 1)

Kamensky, Viktor Ivanovich

Mat Plus, 1998

8/8/8/1pB4K/8/3p1B1N/R2p4/4Nk2

#2

6 + 4

6490 yacpdb 2010

SOLUTION

  • SOUND
  • Sets
    • 1...dxe1Q
      • 2.Bg2#
    • 1...dxe1S
      • 2.Rf2#
    • 1...dxe1B
      • 2.Bg2#
    • 1...dxe1R
      • 2.Bg2#
      • 2.Rf2#
  • Tries
    • 1.Sxd3?
      • 1...d1Q
        • 2.Rf2#
      • 1...d1S
        • 2.Bg2#
      • 1...d1B
        • 2.Rf2#
      • 1...d1R
        • 2.Bg2#
        • 2.Rf2#
      • 1...b4!
    • 1.Rxd2?
      • 1...Kxe1
        • 2.Rd1#
      • 1...b4!
  • Keys
    • 1.Bb4!
      • 1...Kxe1
        • 2.Ra1#
      • 1...dxe1Q
        • 2.Bg2#
      • 1...dxe1S
        • 2.Rf2#
      • 1...dxe1B
        • 2.Bg2#
      • 1...dxe1R
        • 2.Bg2#
        • 2.Rf2#
      • 1...d1Q
        • 2.Rf2#
      • 1...d1S
        • 2.Bg2#
      • 1...d1B
        • 2.Rf2#
      • 1...d1R
        • 2.Bg2#
        • 2.Rf2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK,XS(A)::B(C)
    • P(b);OGATE,SBLOCK,XS(A)::R1(B)
  • Tries
    • Try
      • S(A);XP(c)
      • Vars
        • P(b);OGATE,P_PINB(C)::R1(B)
        • P(b);::B(C)
      • Refutation
        • P(d);
    • Try
      • R(B);XP(b)
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(A)::R1(B)
      • Refutation
        • P(d);
  • Actual
    • B(E);
    • Vars
      • K(a);OGATEB,P-FLIGHT,P_SPINP(b),XS(A)::R(B)
      • P(b);XS(A)::B(C)
      • P(b);OGATE,XS(A)::R1(B)
      • P(b);OGATE,P_PINB(C)::R1(B)
      • P(b);::B(C)
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