MESON Chess Problem Database

Problem Display
PID: 167320 (4k3/8/4K3/4Q3/2N5/8/8/brB5 w - - 0 1)

Brozus, Hartmut

Der Tagesspiegel (Berlin), 2001

(First published on Sun Feb 11 2001)

4k3/8/4K3/4Q3/2N5/8/8/brB5

#2

4 + 3

16210 Problemschach-Jahrbuch (2001) 2002
15148 Sadier Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc1
      • 2.Qb8#
    • 1...Rb2
      • 2.Qh8#
    • 1...Rb8
      • 2.Qxb8#
    • 1...Bb2
      • 2.Qb8#
  • Tries
    • 1.Bb2?
      • threat
        • 2.Qb8#
        • 2.Qh8#
      • 1...Kd8
        • 2.Qb8#
      • 1...Kf8
        • 2.Qb8#
        • 2.Qh8#
      • 1...Rxb2
        • 2.Qh8#
      • 1...Bxb2
        • 2.Qb8#
      • 1...Rd1
        • 2.Qh8#
      • 1...Rf1
        • 2.Qb8#
      • 1...Rg1
        • 2.Qb8#
      • 1...Rh1
        • 2.Qb8#
      • 1...Re1!
    • 1.Qh5+?
      • 1...Kf8
        • 2.Qf7#
      • 1...Kd8!
  • Keys
    • 1.Sb2!
      • threat
        • 2.Qb8#
        • 2.Qh8#
      • 1...Kd8
        • 2.Qb8#
      • 1...Kf8
        • 2.Qh8#
      • 1...Rxc1
        • 2.Qh8#
      • 1...Rxb2
        • 2.Qh8#
      • 1...Bxb2
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(b);N_GUARD,XB(A)::QAR(C)
    • R(b);S_CUTB(a)::QAR(C)
    • R(b);N_GUARD::QAR(C),XR(b)
    • B(a);S_CUTR(b)::QAR(C)
  • Tries
    • Try
      • B(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(c);P-FLIGHT::QAR2(C)
        • R(b);XB(A)::QAR(C)
        • B(a);XB(A)::QAR(C)
        • R(b);::QAR(C)
      • Refutation
        • R(b);P_PINQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(C)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • S(B);
    • Threat
      • DUALS(2)
    • Vars
      • K(c);P-FLIGHT::QAR2(C)
      • R(b);XB(A)::QAR(C)
      • R(b);XS(B)::QAR(C)
      • B(a);XS(B)::QAR(C)
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