MESON Chess Problem Database

Problem Display
PID: 260872 (7R/2Q3N1/4K1kb/6P1/8/8/5p2/8 w - - 0 1)

Hoffmann, Martin Wolfgang

Neue Zurcher Zeitung, 2012

7R/2Q3N1/4K1kb/6P1/8/8/5p2/8

#2

5 + 3

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kxg5
      • 2.Qg3#
    • 1...Bxg5
      • 2.Qf7#
  • Tries
    • 1.Qe5?
      • threat
        • 2.Rxh6#
        • 2.Qf6#
      • 1...Bxg7
        • 2.Qf5#
      • 1...f1Q
        • 2.Rxh6#
      • 1...f1R
        • 2.Rxh6#
      • 1...Bxg5!
    • 1.Qc2+?
      • 1...Kxg7
        • 2.Qh7#
      • 1...Kxg5!
    • 1.Qe7?
      • threat
        • 2.Rxh6#
        • 2.Qf6#
      • 1...Bxg5
        • 2.Qf7#
      • 1...f1Q
        • 2.Rxh6#
      • 1...f1R
        • 2.Rxh6#
      • 1...Bxg7!
    • 1.gxh6?
      • threat
        • 2.Qg3#
      • 1...Kg5
        • 2.Qg3#
      • 1...f1S!
  • Keys
    • 1.Qh2!
      • threat
        • 2.Qxh6#
      • 1...Kxg5
        • 2.Qg3#
      • 1...Kxg7
        • 2.Qxh6#
      • 1...Bxg5
        • 2.Qh7#
      • 1...Bxg7
        • 2.Qh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);OGATEB,P-FLIGHT,XP(A)::QAR2(C)
    • B(c);SBLOCK,XP(A)::QAB1(C)
  • Tries
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • B(c);SBLOCK,XS(D)::QAB1(C)
        • P(a);::R1(E),XB(c)
      • Refutation
        • B(c);XP(A)
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT,XS(D)::QAR1(C)
      • Refutation
        • K(b);P-FLIGHT,XP(A)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • B(c);SBLOCK,XP(A)::QAB1(C)
        • P(a);::R1(E),XB(c)
      • Refutation
        • B(c);XS(D)
    • Try
      • P(A);XB(c)
      • Threat
        • QAR(C)
      • Vars
        • K(b);P-FLIGHT::QAR2(C)
      • Refutation
        • P(a);
  • Actual
    • Q(C);
    • Threat
      • QAR1(C),XB(c)
    • Vars
      • K(b);OGATEB,P-FLIGHT,XP(A)::QAR2(C)
      • K(b);P-FLIGHT,XS(D)::QAB1(C),XB(c)
      • B(c);OGATE,SBLOCK,XP(A)::QAB1(C)
      • B(c);SBLOCK,XS(D)::QAB1(C)
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