MESON Chess Problem Database

Problem Display
PID: 85845 (8/8/8/8/8/4Q1K1/1r2PB2/1N3k2 w - - 0 1)

Speckmann, Werner

Schach aktuell, 1981

8/8/8/8/8/4Q1K1/1r2PB2/1N3k2

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rd2
      • 2.Sxd2#
    • 1...Rb3
      • 2.Sd2#
    • 1...Rb4
      • 2.Sd2#
    • 1...Rb5
      • 2.Sd2#
    • 1...Rb6
      • 2.Sd2#
    • 1...Rb7
      • 2.Sd2#
    • 1...Rb8
      • 2.Sd2#
  • Keys
    • 1.Qd3!
      • threat
        • 2.Qd1#
      • 1...Rxb1
        • 2.e3#
        • 2.e4#
      • 1...Rxe2
        • 2.Sd2#
      • 1...Rd2
        • 2.Sxd2#
      • 1...Rb3
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • R(b);N_GUARD::S(A),XR(b)
    • R(b);N_GUARD,P_PINQ(D)::S(A)
    • R(b);N_GUARD::S(A)
  • Actual
    • Q(D);
    • Threat
      • QAR2(D)
    • Vars
      • R(b);N_GUARD,P_SPINR(b),XP(B)::S(A)
      • R(b);N_GUARD::S(A),XR(b)
      • R(b);N_GUARD,P_PINQ(D)::S(A)
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