MESON Chess Problem Database

Problem Display
PID: 59259 (3rr3/8/8/R4B2/3kP1nR/B1pP4/4Q3/K6b w - - 0 1)

Korponai, Jozsef

1st Prize, Magyar Sakkelet, 1951

3rr3/8/8/R4B2/3kP1nR/B1pP4/4Q3/K6b

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Rxd5#
    • 1...Ra8
      • 2.Rd5#
    • 1...Rb8
      • 2.Rd5#
    • 1...Rc8
      • 2.Rd5#
    • 1...Re5
      • 2.Ra4#
    • 1...Se5
      • 2.Bc5#
    • 1...c2
      • 2.Bb2#
  • Keys
    • 1.e5!
      • threat
        • 2.Qf2#
      • 1...Rxe5
        • 2.Qxe5#
      • 1...c2
        • 2.Bb2#
      • 1...Rd5
        • 2.Ra4#
      • 1...Be4
        • 2.Qxe4#
      • 1...Bd5
        • 2.Bc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(e);N_GUARD::R1(G),XR(e)
    • R(e);N_GUARD::R1(G)
    • R(f);SBLOCK::R(G)
    • S(d);SBLOCK::B(C)
    • P(b);OGATEB::B(C)
  • Actual
    • P(E);P_PINS(d)
    • Threat
      • QAB(B)
    • Vars
      • R(f);OGATE,XP(E)::QAB1(B),XR(f)
      • P(b);OGATEB::B(C)
      • R(e);SBLOCK::R(G)
      • B(a);N_GUARD,N_SPINS(d)::QAR1(B),XB(a)
      • B(a);SBLOCK::B(C)
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