MESON Chess Problem Database

Problem Display
PID: 121400 (8/8/8/8/8/R2K4/Nb2R3/rk6 w - - 0 1)

Mikan, Ilja

Pionyrske Noviny, 1963

8/8/8/8/8/R2K4/Nb2R3/rk6

#2

4 + 3

6490 yacpdb 2009
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Sc3#
  • Tries
    • 1.Sc3+?
      • 1...Kc1
        • 2.Re1#
        • 2.Rc2#
      • 1...Bxc3!
  • Keys
    • 1.Rb3!
      • threat
        • 2.Rexb2#
        • 2.Rbxb2#
      • 1...Kxa2
        • 2.Rexb2#
      • 1...Rxa2
        • 2.Re1#

Anticipated by 261926(1954)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(c);N_GUARD,SBLOCK::S(A)
  • Tries
    • Try
      • S(A);CHECK
      • Refutation
        • B(c);XS(A)
  • Actual
    • R(C);P_PINB(c)
    • Threat
      • DUALS(2)
    • Vars
      • K(b);S_FLIGHT,XS(A)::R1(B),XB(c)
      • R(a);SBLOCK,XS(A)::R(B)
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