MESON Chess Problem Database

Problem Display
PID: 226803 (5n2/1b1B1N2/1P6/2p4N/3pk1Pn/8/QKPP1pr1/8 w - - 0 1)

Jespersen, Karl Lorenz Jesper

Deutsche Schachzeitung, 1909

5n2/1b1B1N2/1P6/2p4N/3pk1Pn/8/QKPP1pr1/8

#2

9 + 8

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ba6
      • 2.Bc6#
    • 1...Bc6
      • 2.Bxc6#
    • 1...Ba8
      • 2.Qxa8#
    • 1...Bc8
      • 2.Bc6#
    • 1...Sf3
      • 2.Bf5#
  • Tries
    • 1.Qe6+?
      • 1...Kf3
        • 2.Sg5#
      • 1...Sxe6!
  • Keys
    • 1.Qa6!
      • threat
        • 2.Qxb7#
      • 1...Kf3
        • 2.Sg5#
        • 2.Qd3#
      • 1...Kd5
        • 2.Sf6#
      • 1...Bxa6
        • 2.Bc6#
      • 1...d3
        • 2.Qxd3#
      • 1...Bd5
        • 2.Qe2#
        • 2.Qd3#
      • 1...Bc6
        • 2.Bxc6#
      • 1...Ba8
        • 2.Qxa8#
      • 1...Bc8
        • 2.Bc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(g);N_GUARD::B(H)
    • B(g);N_GUARD::B(H),XB(g)
    • B(g);OGATEB::QAB(A),XB(g)
    • S(e);N_GUARD,SBLOCK::B(H)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(d);S_FLIGHT::S(I)
      • Refutation
        • S(h);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAB(A),XB(g)
    • Vars
      • K(d);S_FLIGHT::S(F)
      • B(g);N_GUARD,XQ(A)::B(H)
      • P(c);::QAB1(A),XP(c)
      • B(g);N_GUARD::B(H),XB(g)
      • B(g);OGATEB::QAB(A),XB(g)
      • B(g);N_GUARD::B(H)
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