MESON Chess Problem Database

Problem Display
PID: 149538 (Br6/Br1pN3/8/4p2n/1Qn1k3/p2p4/P2PPR2/1K3N2 w - - 0 1)

Albrecht, Hermann

Die Schwalbe, 1936

Br6/Br1pN3/8/4p2n/1Qn1k3/p2p4/P2PPR2/1K3N2

#2

10 + 9

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Sg3
      • 2.Sxg3#
    • 1...Sf4
      • 2.Sg3#
    • 1...Sf6
      • 2.Sg3#
    • 1...Sg7
      • 2.Sg3#
  • Tries
    • 1.Bxb7+?
      • 1...d5
        • 2.Bxd5#
        • 2.Qxc4#
      • 1...Rxb7!
  • Keys
    • 1.Qb3!
      • threat
        • 2.exd3#
      • 1...Sxd2+
        • 2.Sxd2#
      • 1...dxe2
        • 2.d3#
      • 1...Sb6
        • 2.Qxd3#
      • 1...Sb2
        • 2.Qd5#
      • 1...Sf4
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • S(f);N_GUARD::S(B),XS(f)
    • S(f);N_GUARD::S(B)
  • Tries
    • Try
      • B(J);CHECK,N_SPINQ(G),XR(g)
      • Refutation
        • R(i);P_PINQ(G),XB(J)
  • Actual
    • Q(G);N_PINS(c)
    • Threat
      • P(E),XP(b)
    • Vars
      • S(c);CHECK,XP(D)::S(B),XS(c)
      • P(b);OGATE,XP(E)::P(D)
      • S(c);N_PINQ(G)::QAB1(G),XP(b)
      • S(c);N_PINQ(G)::QAB1(G)
      • S(f);N_GUARD::S(B)
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