MESON Chess Problem Database

Problem Display
PID: 149535 (1b6/kpP5/P7/Q7/1P6/8/1K6/8 w - - 0 1)

Dehler, Ernst Georg

Magyar Sakkujsag, 1912

1b6/kpP5/P7/Q7/1P6/8/1K6/8

#2

5 + 3

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Tries
    • 1.Qb6+?
      • 1...Ka8
        • 2.Qxb7#
        • 2.axb7#
      • 1...Kxb6!
    • 1.Qb5?
      • threat
        • 2.Qxb7#
      • 1...Ka8
        • 2.Qxb7#
      • 1...bxa6
        • 2.Qxb8#
        • 2.cxb8Q#
      • 1...b6!
    • 1.cxb8R?
      • 1...bxa6
        • 2.Qb6#
        • 2.Qc7#
      • 1...b6
        • 2.Qxb6#
      • 1...b5
        • 2.Qb6#
      • 1...Kxb8!
    • 1.c8Q?
      • threat
        • 2.Qxb7#
        • 2.axb7#
      • 1...Ka8
        • 2.Qxb7#
        • 2.axb7#
      • 1...bxa6
        • 2.Qcxa6#
        • 2.Qaxa6#
      • 1...b6
        • 2.Qb7#
      • 1...Bc7
        • 2.Qxb7#
      • 1...b5
        • 2.Qb7#
      • 1...Be5+!
  • Keys
    • 1.Qd5!
      • threat
        • 2.Qxb7#
      • 1...Kxa6
        • 2.Qa5#
      • 1...Kb6
        • 2.Qxb7#
      • 1...Ka8
        • 2.Qxb7#
      • 1...bxa6
        • 2.c8S#
      • 1...b6
        • 2.Qb7#
      • 1...b5
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(C)
    • Try
      • Q(C);
      • Threat
        • QAR1(C),XP(b)
      • Vars
        • K(a);P-FLIGHT::QAB1(C),XP(b)
      • Refutation
        • P(b);
    • Try
      • P(E);XB(c)
      • Vars
        • P(b);::QAB1(C),XP(b)
        • P(b);::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT,XR(E)
    • Try
      • P(E);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::QAR1(E)
        • B(c);::QAR1(E),XP(b)
      • Refutation
        • B(c);CHECK
  • Actual
    • Q(C);
    • Threat
      • QAR1(C),XP(b)
    • Vars
      • K(a);OGATEB,P-FLIGHT,XP(D)::QAR1(C)
      • K(a);S_FLIGHT::QAR1(C),XP(b)
      • K(a);P-FLIGHT,P_SPINP(b)::QAB1(C),XP(b)
      • P(b);SBLOCK,XP(D)::P=S
      • P(b);::QAR1(C)
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