MESON Chess Problem Database

Problem Display
PID: 182378 (5N1R/6kp/8/4K3/8/8/3Q2b1/8 w - - 0 1)

Burmeister, Albert M

Baltische Tageszeitung, 1906

5N1R/6kp/8/4K3/8/8/3Q2b1/8

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kf7
      • 2.Qd7#
  • Tries
    • 1.Rxh7+?
      • 1...Kxf8
        • 2.Qd8#
      • 1...Kg8!
    • 1.Qd3?
      • threat
        • 2.Qxh7#
      • 1...Kh6
        • 2.Qg6#
      • 1...Kf7
        • 2.Qd7#
      • 1...Kxh8
        • 2.Qxh7#
      • 1...h5
        • 2.Qh7#
      • 1...h6
        • 2.Qh7#
      • 1...Be4!
    • 1.Qd6?
      • threat
        • 2.Qf6#
      • 1...Kf7
        • 2.Qd7#
      • 1...Kxh8!
    • 1.Qd7+?
      • 1...Kxh8
        • 2.Qxh7#
      • 1...Kh6!
  • Keys
    • 1.Qd8!
      • threat
        • 2.Qf6#
      • 1...Kh6
        • 2.Rxh7#
      • 1...Kf7
        • 2.Qd7#
      • 1...Kxh8
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR2(A)
  • Tries
    • Try
      • R(D);CHECK,XP(c)
      • Vars
        • K(b);S_FLIGHT,XS(C)::QAR2(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XP(c)
      • Vars
        • K(b);P_SPINP(c),S_FLIGHT::QAR1(A)
        • K(b);P-FLIGHT::QAR2(A)
        • K(b);S_FLIGHT,XR(D)::QAR1(A),XP(c)
        • P(c);::QAR1(A)
      • Refutation
        • B(a);
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
      • Refutation
        • K(b);S_FLIGHT,XR(D)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT,XR(D)::QAR1(A),XP(c)
      • Refutation
        • K(b);P_SPINP(c),S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • K(b);P_SPINP(c),S_FLIGHT::R1(D),XP(c)
      • K(b);P-FLIGHT::QAR2(A)
      • K(b);S_FLIGHT,XR(D)::QAR(A)+S(C)
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