MESON Chess Problem Database

Problem Display
PID: 261599 (8/5p2/P2r4/3k4/P5P1/B2K4/3Q4/8 w - - 0 1)

Thellung, A

Neue Zurcher Zeitung, 1897

8/5p2/P2r4/3k4/P5P1/B2K4/3Q4/8

#2

6 + 3

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Ke3+?
      • 1...Ke5
        • 2.Qxd6#
      • 1...Kc6
        • 2.Qxd6#
      • 1...Ke6
        • 2.Qxd6#
      • 1...Kc4!
    • 1.Qf4?
      • threat
        • 2.Qxd6#
        • 2.Qe4#
      • 1...Kc6+
        • 2.Qxd6#
      • 1...Ke6+
        • 2.Qxd6#
      • 1...Rxa6
        • 2.Qe4#
      • 1...Rb6
        • 2.Qe4#
      • 1...Rc6
        • 2.Qe4#
        • 2.Qf5#
      • 1...Rf6
        • 2.Qe4#
      • 1...Rg6
        • 2.Qe4#
      • 1...Rh6
        • 2.Qe4#
      • 1...Rd7
        • 2.Qe4#
      • 1...Rd8
        • 2.Qe4#
      • 1...f5
        • 2.Qxd6#
      • 1...Re6!
  • Keys
    • 1.Qb4!
      • threat
        • 2.Qxd6#
        • 2.Qe4#
      • 1...Ke5+
        • 2.Qxd6#
      • 1...Kc6+
        • 2.Qxd6#
      • 1...Ke6+
        • 2.Qxd6#
      • 1...Rxa6
        • 2.Qe4#
      • 1...Rb6
        • 2.Qe4#
      • 1...Rc6
        • 2.Qe4#
      • 1...Re6
        • 2.Qc5#
        • 2.Qb5#
      • 1...Rf6
        • 2.Qe4#
      • 1...Rg6
        • 2.Qe4#
      • 1...Rh6
        • 2.Qe4#
      • 1...Rd7
        • 2.Qe4#
      • 1...Rd8
        • 2.Qe4#
      • 1...f5
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(C);CHECK,P-FLIGHT
      • Vars
        • K(a);OGATE,P-FLIGHT::QAB1(A),XR(b)
        • K(a);OGATE,S_FLIGHT::QAR1(A),XR(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);CHECK,S_FLIGHT::QAR1(A),XR(b)
        • R(b);XP(F)::QAB1(A)
        • R(b);::QAB1(A)
        • P(c);::QAR1(A),XR(b)
      • Refutation
        • R(b);
  • Actual
    • Q(A);
    • Threat
      • DUALS(2)
    • Vars
      • K(a);CHECK,P-FLIGHT::QAB1(A),XR(b)
      • K(a);CHECK,S_FLIGHT::QAR1(A),XR(b)
      • R(b);XP(F)::QAB1(A)
      • R(b);::QAB1(A)
      • R(b);SBLOCK::QAB1(A)
      • P(c);::QAR1(A),XR(b)
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