MESON Chess Problem Database

Problem Display
PID: 232412 (8/8/5p1n/3R1B1K/4pk1N/6pp/1p6/6Q1 w - - 0 1)

Bottger, Horst

1st HM., Freie Presse, 2012-2013

(First published on Sat Jun 23 2012)

8/8/5p1n/3R1B1K/4pk1N/6pp/1p6/6Q1

#2

5 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sxf5
      • 2.Rxf5#
    • 1...g2
      • 2.Qf2#
    • 1...e3
      • 2.Qf1#
  • Tries
    • 1.Sg2+?
      • 1...Kf3
        • 2.Qf1#
      • 1...hxg2!
    • 1.Bg4?
      • threat
        • 2.Sg6#
      • 1...Sxg4
        • 2.Rf5#
      • 1...g2
        • 2.Qf2#
      • 1...e3!
  • Keys
    • 1.Rd3!
      • threat
        • 2.Qxg3#
      • 1...Ke5
        • 2.Qxg3#
      • 1...Sxf5
        • 2.Sg6#
      • 1...exd3
        • 2.Qd4#
      • 1...g2
        • 2.Qh2#
      • 1...e3
        • 2.Qxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(g);OGATE,XB(D)::R1(C),XS(g)
    • P(b);N_GUARD::QAR2(A)
    • P(d);SBLOCK::QAR(A)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR2(A)
      • Refutation
        • P(c);XS(B)
    • Try
      • B(D);
      • Threat
        • S(B)
      • Vars
        • S(g);N_GUARD,XB(D)::R1(C)
        • P(b);N_GUARD::QAR2(A)
      • Refutation
        • P(d);
  • Actual
    • R(C);
    • Threat
      • QAB1(A),XP(b)
    • Vars
      • K(e);S_FLIGHT::QAB(A),XP(b)
      • S(g);SBLOCK,XB(D)::S(B)
      • P(d);OGATEB,XR(C)::QAR2(A)
      • P(b);OGATEB::QAB(A)
      • P(d);::QAB1(A),XP(d)
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