MESON Chess Problem Database

Problem Display
PID: 103603 (8/3K4/8/2pkp3/R5R1/8/8/8 w - - 0 1)

Janev, Zoran

Umenie 64, 2003

8/3K4/8/2pkp3/R5R1/8/8/8

#2

3 + 3

5454 Near Snap 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.Ra5#
    • 1...e4
      • 2.Rg5#
  • Tries
    • 1.Ra1?
      • threat
        • 2.Rd1#
      • 1...c4
        • 2.Ra5#
      • 1...e4!
    • 1.Ra2?
      • threat
        • 2.Rd2#
      • 1...c4
        • 2.Ra5#
      • 1...e4!
    • 1.Ra3?
      • threat
        • 2.Rd3#
      • 1...c4
        • 2.Ra5#
      • 1...e4!
    • 1.Rab4?
      • 1...c4
        • 2.Rb5#
      • 1...e4
        • 2.Rg5#
      • 1...cxb4!
    • 1.Ra6?
      • threat
        • 2.Rd6#
      • 1...c4
        • 2.Ra5#
      • 1...e4!
    • 1.Ra7?
      • 1...c4
        • 2.Ra5#
      • 1...e4!
    • 1.Ra8?
      • 1...c4
        • 2.Ra5#
      • 1...e4!
    • 1.Rg1?
      • threat
        • 2.Rd1#
      • 1...e4
        • 2.Rg5#
      • 1...c4!
    • 1.Rg2?
      • threat
        • 2.Rd2#
      • 1...e4
        • 2.Rg5#
      • 1...c4!
    • 1.Rg3?
      • threat
        • 2.Rd3#
      • 1...e4
        • 2.Rg5#
      • 1...c4!
    • 1.Rgf4?
      • 1...c4
        • 2.Ra5#
      • 1...e4
        • 2.Rf5#
      • 1...exf4!
    • 1.Rg6?
      • threat
        • 2.Rd6#
      • 1...e4
        • 2.Rg5#
      • 1...c4!
    • 1.Rg7?
      • 1...e4
        • 2.Rg5#
      • 1...c4!
    • 1.Rg8?
      • 1...e4
        • 2.Rg5#
      • 1...c4!
  • Keys
    • 1.Rh4!
      • 1...c4
        • 2.Ra5#
      • 1...e4
        • 2.Rh5#

Anticipated by 202649(1923), 116369(1946), 219853(1974)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATEB::R(A)
    • P(c);OGATEB::R(B)
  • Tries
    • Try
      • R(A);
      • Threat
        • R(A)
      • Vars
        • P(a);OGATEB::R(A)
      • Refutation
        • P(c);
    • Try
      • R(A);
      • Threat
        • R(A)
      • Vars
        • P(a);OGATEB::R(A)
      • Refutation
        • P(c);
    • Try
      • R(A);
      • Threat
        • R(A)
      • Vars
        • P(a);OGATEB::R(A)
      • Refutation
        • P(c);
    • Try
      • R(A);
      • Vars
        • P(a);OGATEB::R(A)
        • P(c);OGATEB::R(B)
      • Refutation
        • P(a);XR(A)
    • Try
      • R(A);
      • Threat
        • R1(A)
      • Vars
        • P(a);OGATEB::R(A)
      • Refutation
        • P(c);
    • Try
      • R(A);
      • Vars
        • P(a);OGATEB::R(A)
      • Refutation
        • P(c);
    • Try
      • R(A);
      • Vars
        • P(a);OGATEB::R(A)
      • Refutation
        • P(c);
    • Try
      • R(B);
      • Threat
        • R(B)
      • Vars
        • P(c);OGATEB::R(B)
      • Refutation
        • P(a);
    • Try
      • R(B);
      • Threat
        • R(B)
      • Vars
        • P(c);OGATEB::R(B)
      • Refutation
        • P(a);
    • Try
      • R(B);
      • Threat
        • R(B)
      • Vars
        • P(c);OGATEB::R(B)
      • Refutation
        • P(a);
    • Try
      • R(B);
      • Vars
        • P(a);OGATEB::R(A)
        • P(c);OGATEB::R(B)
      • Refutation
        • P(c);XR(B)
    • Try
      • R(B);
      • Threat
        • R1(B)
      • Vars
        • P(c);OGATEB::R(B)
      • Refutation
        • P(a);
    • Try
      • R(B);
      • Vars
        • P(c);OGATEB::R(B)
      • Refutation
        • P(a);
    • Try
      • R(B);
      • Vars
        • P(c);OGATEB::R(B)
      • Refutation
        • P(a);
  • Actual
    • R(B);
    • Vars
      • P(a);OGATEB::R(A)
      • P(c);OGATEB::R(B)
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