MESON Chess Problem Database

Problem Display
PID: 205348 (2n5/8/1N5Q/1pk5/5R2/8/5K2/8 w - - 0 1)

Geissler, Emil

Badische Neueste Nachrichten, 1949

2n5/8/1N5Q/1pk5/5R2/8/5K2/8

#2

4 + 3

5454 Near Snap 2020
15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sxc8?
      • threat
        • 2.Qd6#
      • 1...Kd5
        • 2.Qd6#
      • 1...b4!
    • 1.Rf5+?
      • 1...Kd4
        • 2.Qe3#
      • 1...Kb4!
  • Keys
    • 1.Rd4!
      • 1...Kxd4
        • 2.Qe3#
      • 1...Sxb6
        • 2.Qd6#
      • 1...Sd6
        • 2.Qxd6#
      • 1...b4
        • 2.Rd5#
      • 1...Sa7
        • 2.Qd6#
      • 1...Se7
        • 2.Qd6#

Anticipated by 1962(1859), 224218(1887), 121007(1899)

This anticipates 153953(1952)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);XS(c)
      • Threat
        • QAB1(D)
      • Vars
        • K(b);P-FLIGHT::QAR1(D)
      • Refutation
        • P(a);
    • Try
      • R(B);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(D)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • R(B);
    • Vars
      • K(b);OGATEB,S_FLIGHT,XR(B)::QAB1(D)
      • S(c);N_GUARD,XS(C)::QAB1(D)
      • S(c);N_GUARD::QAB1(D),XS(c)
      • P(a);SBLOCK::R1(B)
      • S(c);N_GUARD::QAB1(D)
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