MESON Chess Problem Database

Problem Display
PID: 11783 (2K1R3/1B6/3k2p1/6B1/2RP1np1/6q1/8/6b1 w - - 0 1)

Hoffmann, Fritz

Berliner Zeitung, 1972

2K1R3/1B6/3k2p1/6B1/2RP1np1/6q1/8/6b1

#2

6 + 6

5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Qh4
      • 2.Bxf4#
    • 1...Qg2
      • 2.Bxf4#
    • 1...Qa3
      • 2.Bxf4#
    • 1...Qb3
      • 2.Bxf4#
    • 1...Qc3
      • 2.Bxf4#
    • 1...Qd3
      • 2.Bxf4#
    • 1...Qh3
      • 2.Bxf4#
    • 1...Sd5
      • 2.Rc6#
    • 1...Se6
      • 2.Be7#
  • Tries
    • 1.Be4?
      • threat
        • 2.Rc6#
      • 1...Qc3
        • 2.Bxf4#
      • 1...Sd5!
    • 1.Rc7?
      • threat
        • 2.Rd7#
      • 1...Qc3
        • 2.Bxf4#
      • 1...Bxd4!
    • 1.Re4?
      • threat
        • 2.Be7#
      • 1...Qh4
        • 2.Bxf4#
      • 1...Sd5
        • 2.Rc6#
      • 1...Se6!
    • 1.Re5?
      • threat
        • 2.Be7#
        • 2.Rc6#
      • 1...Qh4
        • 2.Rc6#
      • 1...Qg2
        • 2.Be7#
      • 1...Qc3
        • 2.Be7#
      • 1...Qf3
        • 2.Be7#
      • 1...Sd5
        • 2.Rc6#
      • 1...Se6
        • 2.Rc6#
        • 2.Rd5#
      • 1...Bxd4!
  • Keys
    • 1.Bd8!
      • threat
        • 2.Bc7#
      • 1...Sd5
        • 2.Rc6#
      • 1...Se6
        • 2.Be7#

This anticipates 102676(1988), 42405(1991)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • Q(b);N_GUARD::B(C),XS(c)
    • Q(b);N_GUARD,P_PINR(A)::B(C),XS(c)
    • S(c);SBLOCK::R1(A)
    • S(c);SBLOCK::B(C)
  • Tries
    • Try
      • B(D);
      • Threat
        • R1(A)
      • Vars
        • Q(b);N_GUARD,P_PINR(A)::B(C),XS(c)
      • Refutation
        • S(c);
    • Try
      • R(A);
      • Threat
        • R1(A)
      • Vars
        • Q(b);N_GUARD,P_PINR(A)::B(C),XS(c)
      • Refutation
        • B(a);XP(B)
    • Try
      • R(F);
      • Threat
        • B(C)
      • Vars
        • Q(b);N_GUARD::B(C),XS(c)
        • S(c);SBLOCK::R1(A)
      • Refutation
        • S(c);
    • Try
      • R(F);
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);::R1(A)
        • Q(b);::B(C)
        • Q(b);P_PINR(A)::B(C)
        • S(c);::R1(A)
      • Refutation
        • B(a);XP(B)
  • Actual
    • B(C);
    • Threat
      • B(C)
    • Vars
      • S(c);SBLOCK::R1(A)
      • S(c);SBLOCK::B(C)
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