MESON Chess Problem Database

Problem Display
PID: 11461 (3QRb2/4q2B/8/KN3rp1/2pPkp2/3pnn1N/5R2/6B1 w - - 0 1)

Hassberg, Eric Manfred

1st HM., BCF 033. Ty., 1939-1940

3QRb2/4q2B/8/KN3rp1/2pPkp2/3pnn1N/5R2/6B1

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Se1
      • 2.Sxg5#
    • 1...Sxg1
      • 2.Sxg5#
    • 1...Sd2
      • 2.Sxg5#
    • 1...Sh2
      • 2.Sxg5#
    • 1...Sxd4
      • 2.Qxd4#
    • 1...Sh4
      • 2.Sxg5#
    • 1...Se5
      • 2.Sc3#
  • Tries
    • 1.Rxe7+?
      • 1...Se5
        • 2.Sxg5#
        • 2.Sc3#
        • 2.Rxe5#
      • 1...Bxe7!
    • 1.Qxe7+?
      • 1...Kd5
        • 2.Qe4#
        • 2.Qe6#
        • 2.Qb7#
      • 1...Se5
        • 2.Qxe5#
      • 1...Bxe7!
  • Keys
    • 1.Rf1!
      • threat
        • 2.Sf2#
      • 1...Sxf1
        • 2.Qa8#
      • 1...Sxg1
        • 2.Sxg5#
      • 1...Sxd4
        • 2.Qxd4#
      • 1...Sd1
        • 2.Qa8#
      • 1...Sc2
        • 2.Qa8#
      • 1...Sg2
        • 2.Qa8#
      • 1...Sg4
        • 2.Qa8#
      • 1...Sd5
        • 2.Sd6#
      • 1...Se1
        • 2.Sxg5#
      • 1...Sd2
        • 2.Sxg5#
      • 1...Sh2
        • 2.Sxg5#
      • 1...Sh4
        • 2.Sxg5#
      • 1...Se5
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD::S(C),XP(h)
    • S(c);N_GUARD,XB(A)::S(C),XP(h)
    • S(c);OGATE,XP(D)::QAR1(H),XS(c)
    • S(c);N_PINS(F),N_SPINQ(i)::S(F)
  • Tries
    • Try
      • R(I);CHECK,XQ(i)
      • Refutation
        • B(j);XR(I)
    • Try
      • Q(H);CHECK,XQ(i)
      • Vars
        • S(c);N_GUARD,N_PINS(F),P_SPINS(c)::QAR1(H),XS(c)
      • Refutation
        • B(j);P_SPINB(j),XQ(H)
  • Actual
    • R(B);
    • Threat
      • S(C)
    • Vars
      • S(b);N_GUARD,XR(B)::QAB(H)
      • S(c);N_GUARD,XB(A)::S(C),XP(h)
      • S(c);OGATE,XP(D)::QAR1(H),XS(c)
      • S(b);N_GUARD::QAB(H)
      • S(b);N_PINS(F),SBLOCK::S(F)
      • S(c);N_GUARD::S(C),XP(h)
      • S(c);N_PINS(F),N_SPINQ(i)::S(F)
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Developed and maintained by Brian Stephenson.
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