MESON Chess Problem Database

Problem Display
PID: 121377 (N7/3p2Q1/8/2kpr3/3N4/3P4/KP2P2B/8 w - - 0 1)

Feigl, Maximilian

La Strategie, 1888

N7/3p2Q1/8/2kpr3/3N4/3P4/KP2P2B/8

#2

8 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd4
      • 2.Bg1#
    • 1...Kd6
      • 2.Qf8#
  • Tries
    • 1.b4+?
      • 1...Kxd4
        • 2.Qxe5#
      • 1...Kd6
        • 2.Bxe5#
        • 2.Qxe5#
        • 2.Qf6#
        • 2.Qf8#
      • 1...Kxb4!
  • Keys
    • 1.Ka3!
      • 1...Kxd4
        • 2.Bg1#
      • 1...Kd6
        • 2.Qf8#
      • 1...Rxe2
        • 2.b4#
      • 1...Re3
        • 2.b4#
      • 1...Re4
        • 2.b4#
      • 1...Rf5
        • 2.b4#
      • 1...Rg5
        • 2.b4#
      • 1...Rh5
        • 2.b4#
      • 1...Re6
        • 2.b4#
      • 1...Re7
        • 2.b4#
      • 1...Re8
        • 2.b4#
      • 1...d6
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • K(a);OGATEB,P_SPINR(c),S_FLIGHT,XS(F)::B(D)
    • K(a);P_SPINR(c),S_FLIGHT::QAB(G)
  • Tries
    • Try
      • P(B);CHECK
      • Vars
        • K(a);P_SPINR(c),S_FLIGHT,XS(F)::QAB1(G),XR(c)
      • Refutation
        • K(a);S_FLIGHT,XP(B)
  • Actual
    • K(A);P-FLIGHT
    • Vars
      • K(a);OGATEB,P_SPINR(c),S_FLIGHT,XS(F)::B(D)
      • K(a);P_SPINR(c),S_FLIGHT::QAB(G)
      • R(c);XP(C)::P(B)
      • R(c);P_PINP(E)::P(B)
      • R(c);::P(B)
      • P(d);OGATE,SBLOCK::QAB(G)
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