MESON Chess Problem Database

Problem Display
PID: 108169 (8/3B3n/R7/3kPp2/2r1NP2/1Pp3P1/2K2B2/8 w - - 0 1)

Grabowski, Kazimierz

Tygodnik Illustrowany, 1912

8/3B3n/R7/3kPp2/2r1NP2/1Pp3P1/2K2B2/8

#2

9 + 5

6490 yacpdb 2009
5454 Near Snap 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Ra4
      • 2.Sxc3#
    • 1...Rb4
      • 2.Sxc3#
    • 1...Rxe4
      • 2.Be6#
      • 2.Ra5#
      • 2.Rd6#
    • 1...Sg5
      • 2.Sf6#
    • 1...Sf6
      • 2.Sxf6#
    • 1...Sf8
      • 2.Sf6#
    • 1...fxe4
      • 2.Be6#
      • 2.Rd6#
  • Tries
    • 1.Sg5?
      • threat
        • 2.Be6#
        • 2.Rd6#
      • 1...Rxf4
        • 2.Ra5#
      • 1...Rd4
        • 2.Ra5#
      • 1...Rc6
        • 2.Bxc6#
      • 1...Sf8
        • 2.Rd6#
      • 1...Sxg5!
    • 1.Ra5+?
      • 1...Rc5
        • 2.Sxc3#
      • 1...Kxe4!
    • 1.bxc4+?
      • 1...Kxe4
        • 2.Bc6#
      • 1...Kxc4!
  • Keys
    • 1.Ra4!
      • 1...Kxe4
        • 2.Bc6#
      • 1...Rxa4
        • 2.Sxc3#
      • 1...Rxe4
        • 2.Ra5#
      • 1...fxe4
        • 2.bxc4#
      • 1...Rd4
        • 2.Rxd4#
      • 1...Rb4
        • 2.Sxc3#
      • 1...Rc5
        • 2.Rd4#
      • 1...Rc6
        • 2.Rd4#
      • 1...Rc7
        • 2.Rd4#
      • 1...Rc8
        • 2.Rd4#
      • 1...Sg5
        • 2.Sf6#
      • 1...Sf6
        • 2.Sxf6#
      • 1...Sf8
        • 2.Sf6#

Anticipated by 131904(1908)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • R(b);N_GUARD::S(E),XP(a)
    • S(e);N_GUARD::S(E)
    • S(e);N_GUARD::S(E),XS(e)
  • Tries
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);N_GUARD,XP(F)::R(H)
        • R(b);N_GUARD::R(H)
        • R(b);N_GUARD::B(I),XR(b)
        • S(e);::R1(H)
      • Refutation
        • S(e);XS(E)
    • Try
      • R(H);CHECK
      • Vars
        • R(b);P_SPINR(b)::S(E),XP(a)
      • Refutation
        • K(c);S_FLIGHT,XS(E)
    • Try
      • P(C);CHECK,XR(b)
      • Vars
        • K(c);S_FLIGHT,XS(E)::B(I)
      • Refutation
        • K(c);S_FLIGHT,XP(C)
  • Actual
    • R(H);
    • Vars
      • K(c);P_SPINR(b),S_FLIGHT,XS(E)::B(I)
      • R(b);N_GUARD,XR(H)::S(E),XP(a)
      • R(b);N_GUARD,SBLOCK,XS(E)::R(H)
      • P(d);SBLOCK,XS(E)::P(C),XR(b)
      • R(b);OGATE::R1(H),XR(b)
      • R(b);N_GUARD::S(E),XP(a)
      • R(b);OGATE::R1(H)
      • S(e);N_GUARD::S(E)
      • S(e);N_GUARD::S(E),XS(e)
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