MESON Chess Problem Database

Problem Display
PID: 268457 (8/2p4N/2p1p3/2Bbk2K/rr2p1P1/2R3P1/pQ6/8 w - - 0 1)

Dobordzinidze, Aleksandr

Die Schwalbe, 1931

8/2p4N/2p1p3/2Bbk2K/rr2p1P1/2R3P1/pQ6/8

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Rxc4#
    • 1...e3
      • 2.Rxe3#
  • Tries
    • 1.Qc1?
      • threat
        • 2.Qf4#
        • 2.Qg5#
      • 1...Bb3
        • 2.Qg5#
      • 1...Bc4
        • 2.Qg5#
      • 1...e3!
    • 1.Qd2?
      • threat
        • 2.Qf4#
        • 2.Qg5#
      • 1...Bb3
        • 2.Qg5#
      • 1...Bc4
        • 2.Qg5#
        • 2.Qd4#
      • 1...e3!
  • Keys
    • 1.Sf6!
      • threat
        • 2.Sd7#
      • 1...Kxf6
        • 2.Rf3#
      • 1...Bb3
        • 2.Rc4#
      • 1...Bc4
        • 2.Rb3#
      • 1...e3
        • 2.Rxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(c);N_GUARD::QAB(A)+R(B),XR(c)
    • P(d);::QAB(A)+R(B),DCHECK,XP(d)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(e);::QAR2(A)
      • Refutation
        • P(d);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(e);::QAR2(A)
      • Refutation
        • P(d);
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • K(f);S_FLIGHT,XS(G)::QAB(A)+R(B),DCHECK
      • B(e);S_CUTR(c)::QAB(A)+R(B)
      • P(d);::QAB(A)+R(B),DCHECK,XP(d)
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