MESON Chess Problem Database

Problem Display
PID: 15422 (8/8/1p1R4/1Nk1n3/K2R4/8/8/8 w - - 0 1)

Hernitz, Zvonimir

The Problemist, 1983

8/8/1p1R4/1Nk1n3/K2R4/8/8/8

#2

4 + 3

5454 Near Snap 2009
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.R4d5#
    • 1...Sc6
      • 2.R6d5#
  • Tries
    • 1.Rd1?
      • 1...Kc4
        • 2.Rc1#
      • 1...Sf3
        • 2.Rc1#
      • 1...Sc4
        • 2.R1d5#
      • 1...Sg4
        • 2.Rc1#
      • 1...Sc6
        • 2.Rc1#
      • 1...Sg6
        • 2.Rc1#
      • 1...Sd7
        • 2.Rc1#
      • 1...Sf7
        • 2.Rc1#
      • 1...Sd3!
    • 1.Rd3?
      • 1...Kc4
        • 2.Rc3#
      • 1...Sf3
        • 2.Rc3#
      • 1...Sc4
        • 2.R3d5#
      • 1...Sg4
        • 2.Rc3#
      • 1...Sc6
        • 2.Rc3#
      • 1...Sg6
        • 2.Rc3#
      • 1...Sd7
        • 2.Rc3#
      • 1...Sf7
        • 2.Rc3#
      • 1...Sxd3!
    • 1.Rd7?
      • 1...Kc6
        • 2.Rc7#
      • 1...Sd3
        • 2.Rc7#
      • 1...Sf3
        • 2.Rc7#
      • 1...Sc4
        • 2.Rc7#
      • 1...Sg4
        • 2.Rc7#
      • 1...Sc6
        • 2.R7d5#
      • 1...Sg6
        • 2.Rc7#
      • 1...Sf7
        • 2.Rc7#
      • 1...Sxd7!
    • 1.Rd8?
      • 1...Sd3
        • 2.Rc8#
      • 1...Sf3
        • 2.Rc8#
      • 1...Sc4
        • 2.Rc8#
      • 1...Sg4
        • 2.Rc8#
      • 1...Sc6
        • 2.R8d5#
      • 1...Sg6
        • 2.Rc8#
      • 1...Sd7
        • 2.Rc8#
      • 1...Sf7
        • 2.Rc8#
      • 1...Kc6!
  • Keys
    • 1.Rd2!
      • 1...Kc4
        • 2.Rc2#
      • 1...Sd3
        • 2.Rc2#
      • 1...Sf3
        • 2.Rc2#
      • 1...Sc4
        • 2.R2d5#
      • 1...Sg4
        • 2.Rc2#
      • 1...Sc6
        • 2.Rc2#
      • 1...Sg6
        • 2.Rc2#
      • 1...Sd7
        • 2.Rc2#
      • 1...Sf7
        • 2.Rc2#

Anticipated by 110025(1929-1931), 77662(1930), 85958(1965), 176341(1972)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::R1(B)
    • S(b);SBLOCK::R1(D)
  • Tries
    • Try
      • R(B);
      • Vars
        • K(a);P-FLIGHT::R(B)
        • S(b);N_GUARD::R(B)
        • S(b);SBLOCK::R1(B)
      • Refutation
        • S(b);
    • Try
      • R(B);
      • Vars
        • K(a);P-FLIGHT::R1(B)
        • S(b);N_GUARD::R(B)
        • S(b);SBLOCK::R1(B)
      • Refutation
        • S(b);XR(B)
    • Try
      • R(D);
      • Vars
        • K(a);P-FLIGHT::R1(D)
        • S(b);N_GUARD::R(D)
        • S(b);SBLOCK::R1(D)
      • Refutation
        • S(b);XR(D)
    • Try
      • R(D);
      • Vars
        • S(b);N_GUARD::R(D)
        • S(b);SBLOCK::R1(D)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • R(B);
    • Vars
      • K(a);P-FLIGHT::R(B)
      • S(b);N_GUARD::R(B)
      • S(b);SBLOCK::R1(B)
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