MESON Chess Problem Database

Problem Display
PID: 149265 (8/8/8/8/5P1k/4PP1p/7Q/6K1 w - - 0 1)

Dehler, Ernst Georg

Leipziger Tageblatt, 1924

8/8/8/8/5P1k/4PP1p/7Q/6K1

#2

5 + 2

15148 Sadier Collection 2013

SOLUTION

  • SOUND
  • Tries
    • 1.Qg3+?
      • 1...Kh5
        • 2.Qg5#
      • 1...Kxg3!
    • 1.Qa2?
      • 1...h2+
        • 2.Qxh2#
      • 1...Kg3
        • 2.Qf2#
      • 1...Kh5!
    • 1.Qb2?
      • 1...h2+
        • 2.Qxh2#
      • 1...Kg3
        • 2.Qf2#
      • 1...Kh5!
    • 1.Qd2?
      • 1...h2+
        • 2.Qxh2#
      • 1...Kg3
        • 2.Qf2#
      • 1...Kh5!
    • 1.Qe2?
      • 1...h2+
        • 2.Qxh2#
      • 1...Kg3
        • 2.Qf2#
      • 1...Kh5!
    • 1.Qg2?
      • threat
        • 2.Qg4#
        • 2.Qg5#
      • 1...h2+
        • 2.Qxh2#
      • 1...Kh5
        • 2.Qg5#
      • 1...hxg2!
  • Keys
    • 1.Qc2!
      • 1...h2+
        • 2.Qxh2#
      • 1...Kg3
        • 2.Qf2#
      • 1...Kh5
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);CHECK,N_PINP(a)
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT,XQ(B)
    • Try
      • Q(B);N_PINP(a)
      • Vars
        • P(a);CHECK,OGATEB::QAR2(B),XP(a)
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);N_PINP(a)
      • Vars
        • P(a);CHECK,OGATEB::QAR2(B),XP(a)
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);N_PINP(a)
      • Vars
        • P(a);CHECK,OGATEB::QAR2(B),XP(a)
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);N_PINP(a)
      • Vars
        • P(a);CHECK,OGATEB::QAR2(B),XP(a)
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);N_PINP(a)
      • Threat
        • DUALS(2)
      • Vars
        • P(a);CHECK,OGATEB::QAR2(B),XP(a)
        • K(b);P-FLIGHT::QAR1(B)
      • Refutation
        • P(a);XQ(B)
  • Actual
    • Q(B);N_PINP(a)
    • Vars
      • P(a);CHECK,OGATEB::QAR2(B),XP(a)
      • K(b);S_FLIGHT::QAB1(B)
      • K(b);P-FLIGHT::QAR2(B)
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