MESON Chess Problem Database

Problem Display
PID: 87291 (4rb2/5N1K/2p2BRp/3k4/3P4/1n1P3B/2N1n3/1q2r2b w - - 0 1)

Grinblat, Arieh

Themes-64, 1960

4rb2/5N1K/2p2BRp/3k4/3P4/1n1P3B/2N1n3/1q2r2b

#2

8 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.Sxe3#
    • 1...Re7
      • 2.Sb4#
    • 1...Ra8
      • 2.Se3#
    • 1...Rb8
      • 2.Se3#
    • 1...Rc8
      • 2.Se3#
    • 1...Rd8
      • 2.Se3#
    • 1...Be4
      • 2.Se3#
    • 1...Bb4
      • 2.Sxb4#
    • 1...Be7
      • 2.Se3#
    • 1...Bg7
      • 2.Sb4#
  • Tries
    • 1.Rg5+?
      • 1...Re5
        • 2.Rxe5#
      • 1...hxg5!
  • Keys
    • 1.Be7!
      • threat
        • 2.Be6#
        • 2.Rd6#
      • 1...Qxc2
        • 2.Rd6#
      • 1...Rxe7
        • 2.Rd6#
      • 1...Bxe7
        • 2.Be6#
      • 1...Sexd4
        • 2.Sb4#
      • 1...Sbxd4
        • 2.Se3#
      • 1...Rd8
        • 2.Be6#
      • 1...Be4
        • 2.Be6#
      • 1...Sec1
        • 2.Rd6#
      • 1...Sg1
        • 2.Rd6#
      • 1...Sc3
        • 2.Rd6#
      • 1...Sg3
        • 2.Rd6#
      • 1...Sf4
        • 2.Rd6#
      • 1...Sc5
        • 2.Rd6#
      • 1...c5
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 10
    • REMOVED MATES = 6
  • Sets
    • R(i);N_GUARD::S(A),XR(i)
    • R(i);P_PINS(G),S_CUTB(j)::S(A)
    • R(i);N_GUARD::S(A)
    • B(c);P_PINR(F),S_CUTR(i)::S(A)
    • B(j);N_GUARD::S(A),XB(j)
    • B(j);S_CUTR(i)::S(A)
    • B(j);N_GUARD::S(A)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • R(i);N_GUARD,P_SPINR(i)::R1(F),XR(i)
      • Refutation
        • P(h);XR(F)
  • Actual
    • B(E);
    • Threat
      • DUALS(2)
    • Vars
      • Q(a);XS(A)::R1(F)
      • R(i);P_PINS(G),XB(E)::R1(F)
      • B(j);XB(E)::B(C)
      • S(d);SBLOCK,XP(D)::S(A)
      • S(e);SBLOCK,XP(D)::S(A)
      • R(i);::B(C)
      • B(c);P_PINR(F)::B(C)
      • S(d);::R1(F)
      • S(e);::R1(F)
      • P(g);::R1(F)
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Developed and maintained by Brian Stephenson.
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