MESON Chess Problem Database

Problem Display
PID: 231619 (8/B3pp1K/1R2p3/1N6/2PR1P2/4krN1/1r3p2/5B1Q w - - 0 1)

Grunfeld, Max

Magyar Sakkvilag, 1927

8/B3pp1K/1R2p3/1N6/2PR1P2/4krN1/1r3p2/5B1Q

#2

10 + 7

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd2
      • 2.Re4#
    • 1...Rxg3
      • 2.Qe4#
    • 1...Rxf4
      • 2.Rd3#
    • 1...e5
      • 2.Sf5#
    • 1...f5
      • 2.Rxe6#
    • 1...f6
      • 2.Rxe6#
  • Keys
    • 1.Sa3!
      • 1...Kxd4
        • 2.Rb3#
      • 1...Rxb6
        • 2.Sc2#
      • 1...Rxg3
        • 2.Qe4#
      • 1...Rxf4
        • 2.Rd3#
      • 1...Rb1
        • 2.Sc2#
      • 1...Ra2
        • 2.Rb3#
      • 1...Rc2
        • 2.Sxc2#
      • 1...Rd2
        • 2.Re4#
      • 1...Re2
        • 2.Rb3#
      • 1...Rb3
        • 2.Sc2#
        • 2.Rxb3#
      • 1...Rb4
        • 2.Sc2#
      • 1...Rb5
        • 2.Sc2#
      • 1...e5
        • 2.Sf5#
      • 1...f5
        • 2.Rxe6#
      • 1...f6
        • 2.Rxe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • R(a);SBLOCK::R1(E)
    • R(d);OGATE,XS(C)::QAR1(B)
    • R(d);SBLOCK,XP(F)::R1(E)
    • P(e);N_GUARD::S(C)
    • P(g);N_GUARD::R(H),XP(e)
  • Actual
    • S(G);
    • Vars
      • K(c);S_FLIGHT,XR(E)::B(I)+R(H)
      • R(a);N_GUARD,XR(H)::S(G)
      • R(d);OGATE,XS(C)::QAR1(B)
      • R(d);SBLOCK,XP(F)::R1(E)
      • R(a);N_GUARD::S(G)
      • R(a);N_GUARD::R(H)
      • R(a);N_GUARD::S(G),XR(a)
      • R(a);SBLOCK::R1(E)
      • P(e);N_GUARD::S(C)
      • P(g);N_GUARD::R(H),XP(e)
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