MESON Chess Problem Database

Problem Display
PID: 176486 (2B4q/6pN/4p3/4rkpP/R5N1/3PpK2/5b2/8 w - - 0 1)

Riczu, Lajos

Schach-Echo, 1965

2B4q/6pN/4p3/4rkpP/R5N1/3PpK2/5b2/8

#2

7 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.dxe4#
    • 1...Ra5
      • 2.Rxa5#
    • 1...g6
      • 2.Sh6#
  • Tries
    • 1.Ra5?
      • threat
        • 2.Rxe5#
      • 1...Rb5
        • 2.Rxb5#
      • 1...Rc5
        • 2.Rxc5#
      • 1...Rd5
        • 2.Rxd5#
      • 1...Bg3
        • 2.Sxe3#
      • 1...g6
        • 2.Sh6#
      • 1...Rxa5!
  • Keys
    • 1.Re4!
      • threat
        • 2.Rxe5#
      • 1...Rxe4
        • 2.dxe4#
      • 1...Ra5
        • 2.Bxe6#
      • 1...Rb5
        • 2.Bxe6#
      • 1...Rc5
        • 2.Bxe6#
      • 1...Rd5
        • 2.Bxe6#
      • 1...Bg3
        • 2.Sxe3#
      • 1...g6
        • 2.Sh6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(c);OGATE::P(A),XR(c)
    • R(c);OGATEB::R(C),XR(c)
    • P(g);N_GUARD::S(D)
  • Tries
    • Try
      • R(C);P_PINR(c)
      • Threat
        • R1(C),XR(c)
      • Vars
        • R(c);OGATEB::R(C),XR(c)
        • B(a);N_GUARD::S(D),XP(b)
        • P(g);N_GUARD::S(D)
      • Refutation
        • R(c);N_SPINR(c),XR(C)
  • Actual
    • R(C);
    • Threat
      • R1(C),XR(c)
    • Vars
      • R(c);OGATE,XR(C)::P(A),XR(c)
      • R(c);N_GUARD::B(G),XP(f)
      • B(a);N_GUARD::S(D),XP(b)
      • P(g);N_GUARD::S(D)
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