MESON Chess Problem Database

Problem Display
PID: 227622 (1K6/3p4/3RN3/2ppk3/2P1P2B/7P/1N2R3/8 w - - 0 1)

Berenyi, Rezso

Ujsag, 1926

1K6/3p4/3RN3/2ppk3/2P1P2B/7P/1N2R3/8

#2

9 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...dxc4
      • 2.Sxc4#
  • Tries
    • 1.cxd5?
      • threat
        • 2.Sc4#
      • 1...Kxd6
        • 2.Sc4#
      • 1...c4
        • 2.Sxc4#
      • 1...dxe6!
  • Keys
    • 1.Sd4!
      • 1...Kxd4
        • 2.Bf6#
      • 1...Kf4
        • 2.Sd3#
      • 1...Kxd6
        • 2.e5#
      • 1...cxd4
        • 2.Bg3#
      • 1...dxc4
        • 2.Bg3#
      • 1...dxe4
        • 2.Bg3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(b);XP(D)::S(A),XP(b)
  • Tries
    • Try
      • P(D);XP(b)
      • Threat
        • S(A)
      • Vars
        • K(c);S_FLIGHT,XR(G)::S(A)
        • P(a);::S(A),XP(a)
      • Refutation
        • P(d);XS(H)
  • Actual
    • S(H);
    • Vars
      • K(c);P_SPINP(b),S_FLIGHT,XS(H)::B(F)
      • K(c);S_FLIGHT::S(A)
      • K(c);OGATE,S_FLIGHT,XR(G)::P(E)
      • P(a);SBLOCK,XS(H)::B(F)
      • P(b);XP(D)::B(F)
      • P(b);P_SPINP(b),XP(E)::B(F)
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