MESON Chess Problem Database

Problem Display
PID: 227504 (8/3pbp2/4p3/8/R2Pk3/4NpP1/2K2P1Q/8 w - - 0 1)

Harder, Karl

Volk und Zeit, 1926

8/3pbp2/4p3/8/R2Pk3/4NpP1/2K2P1Q/8

#2

7 + 6

6490 yacpdb 2020
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ba3
      • 2.Qh4#
    • 1...Bb4
      • 2.Qh4#
    • 1...Bh4
      • 2.Qxh4#
    • 1...Bc5
      • 2.Qh4#
    • 1...Bf6
      • 2.Qh7#
    • 1...Bf8
      • 2.Qh4#
    • 1...f6
      • 2.Qh4#
  • Keys
    • 1.Qh8!
      • threat
        • 2.Qe5#
      • 1...Bd6
        • 2.Qa8#
      • 1...Bf6
        • 2.Qh7#
      • 1...e5
        • 2.Qxe5#
      • 1...d6
        • 2.d5#
      • 1...f6
        • 2.Qh4#

Anticipated by 9374(1901)

This anticipates 248090(1944), 232752(1976), 205470(2017)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • B(e);N_GUARD::QAR(C)
    • B(e);N_GUARD::QAR(C),XB(e)
    • B(e);S_CUTP(f)::QAB(C)
    • P(f);S_CUTB(e)::QAR(C)
  • Actual
    • Q(C);
    • Threat
      • QAR1(C)
    • Vars
      • B(e);S_CUTP(d)::QAB(C)
      • B(e);S_CUTP(f)::QAB(C)
      • P(c);::QAR1(C),XP(c)
      • P(d);S_CUTB(e)::R(F)+P(G)
      • P(f);S_CUTB(e)::QAR(C)
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