MESON Chess Problem Database

Problem Display
PID: 241638 (R7/1B2K1P1/8/8/8/6B1/4N1Pr/6rk w - - 0 1)

Mlynka, Karol

Smena, 1963

R7/1B2K1P1/8/8/8/6B1/4N1Pr/6rk

#2

7 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Rxa1#
    • 1...Rgxg2
      • 2.Ra1#
    • 1...Rhxg2
      • 2.Rh8#
    • 1...Rh8
      • 2.Rxh8#
      • 2.gxh8Q#
      • 2.gxh8R#
  • Tries
    • 1.Ra1?
      • threat
        • 2.Rxg1#
      • 1...Rb1
        • 2.Rxb1#
      • 1...Rc1
        • 2.Rxc1#
      • 1...Rd1
        • 2.Rxd1#
      • 1...Re1
        • 2.Rxe1#
      • 1...Rf1
        • 2.Rxf1#
      • 1...Rxa1!
  • Keys
    • 1.Rh8!
      • threat
        • 2.Rxh2#
      • 1...Rxh8
        • 2.gxh8Q#
        • 2.gxh8R#
      • 1...Rh3
        • 2.Rxh3#
      • 1...Rh4
        • 2.Rxh4#
      • 1...Rh5
        • 2.Rxh5#
      • 1...Rh6
        • 2.Rxh6#
      • 1...Rh7
        • 2.Rxh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • R(a);OGATEB::R(G),XR(a)
    • R(a);OGATEB,P_SPINR(a),XP(B)::R(G)
    • R(c);OGATEB,P_SPINR(c),XP(B)::R(G)
  • Tries
    • Try
      • R(G);P_PINR(a)
      • Threat
        • R1(G),XR(a)
      • Vars
        • R(a);OGATEB::R(G),XR(a)
        • R(a);OGATEB,P_PINS(A)::R(G),XR(a)
      • Refutation
        • R(a);N_SPINR(a),XR(G)
  • Actual
    • R(G);P_PINR(c)
    • Threat
      • R1(G),XR(c)
    • Vars
      • R(c);N_SPINR(c),OGATE,XR(G)::PXR(c)=Q
      • R(c);OGATEB::R(G),XR(c)
      • R(c);OGATEB,P_PINP(F)::R(G),XR(c)
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