MESON Chess Problem Database

Problem Display
PID: 174160 (8/B7/3p4/7B/7p/2KP2kp/1Q4Nr/7n w - - 0 1)

Buchner, Richard

1st Prize, Essener Volkswacht, 1927

8/B7/3p4/7B/7p/2KP2kp/1Q4Nr/7n

#2

6 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sf2
      • 2.Qxf2#
    • 1...d5
      • 2.Bb8#
  • Tries
    • 1.Qd2?
      • threat
        • 2.Qg5#
      • 1...hxg2
        • 2.Qe3#
      • 1...Sf2
        • 2.Qxf2#
      • 1...Rxg2!
    • 1.Qe2?
      • threat
        • 2.Qf3#
        • 2.Qg4#
      • 1...Sf2
        • 2.Qf3#
        • 2.Qxf2#
      • 1...Rxg2!
    • 1.Qb7?
      • threat
        • 2.Qf3#
        • 2.Qg7#
      • 1...hxg2
        • 2.Qf3#
      • 1...d5
        • 2.Qg7#
      • 1...Sf2
        • 2.Qf3#
      • 1...Rxg2!
  • Keys
    • 1.Qb6!
      • 1...Kxg2
        • 2.Qg1#
      • 1...Rxg2
        • 2.Qxd6#
      • 1...hxg2
        • 2.Qe3#
      • 1...Sf2
        • 2.Qxf2#
      • 1...d5
        • 2.Qg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB1(A),XS(a)
    • P(f);OGATEB::B(F)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • P(d);SBLOCK,XS(B)::QAR2(A)
        • S(a);N_GUARD::QAB1(A),XS(a)
      • Refutation
        • R(b);XS(B)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Refutation
        • R(b);XS(B)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(d);XS(B)::QAR1(A)
        • P(f);::QAR(A)
        • S(a);::QAR1(A)
      • Refutation
        • R(b);XS(B)
  • Actual
    • Q(A);
    • Vars
      • K(c);OGATEB,P-FLIGHT,XS(B)::QAR1(A)
      • R(b);SBLOCK,XS(B)::QAB(A),XP(f)
      • P(d);SBLOCK,XS(B)::QAR2(A)
      • S(a);N_GUARD::QAB1(A),XS(a)
      • P(f);OGATE::QAR(A)
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