MESON Chess Problem Database

Problem Display
PID: 239056 (3n4/3pb3/1Bpk2bR/2N2p2/7r/1BN5/8/QK2R3 w - - 0 1)

Segers, Marcel

L'Italia Scacchistica, 1935

3n4/3pb3/1Bpk2bR/2N2p2/7r/1BN5/8/QK2R3

#2

8 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Se6
      • 2.Sb7#
    • 1...Sb7
      • 2.Sxb7#
    • 1...Sf7
      • 2.Sb7#
    • 1...f4+
      • 2.S3e4#
  • Tries
    • 1.S3e4+?
      • 1...fxe4
        • 2.Rd1#
        • 2.Qd4#
      • 1...Rxe4!
    • 1.Rxg6+?
      • 1...Se6
        • 2.Sb7#
      • 1...Bf6!
    • 1.Qa7?
      • threat
        • 2.Bc7#
        • 2.Qb8#
        • 2.Qc7#
        • 2.Qxd7#
      • 1...Re4
        • 2.Bc7#
        • 2.Qb8#
        • 2.Qc7#
      • 1...Se6
        • 2.Sb7#
        • 2.Qxd7#
      • 1...Sb7
        • 2.Sxb7#
        • 2.Qb8#
      • 1...f4+!
    • 1.Qa8?
      • threat
        • 2.Qb8#
      • 1...Se6
        • 2.Sb7#
      • 1...f4+!
  • Keys
    • 1.Qa5!
      • threat
        • 2.Bc7#
      • 1...f4+
        • 2.S5e4#
      • 1...Se6
        • 2.Sb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • S(h);N_GUARD,N_SPINB(e)::S(F)
    • S(h);N_GUARD::S(F),XS(h)
    • S(h);N_GUARD::S(F)
    • P(b);CHECK,N_GUARD,S_CUTR(a)::S(E)
  • Tries
    • Try
      • S(E);CHECK
      • Refutation
        • R(a);XS(E)
    • Try
      • R(H);CHECK,XB(e)
      • Vars
        • S(h);P_SPINS(h)::S(F)
      • Refutation
        • B(g);P_SPINB(g)
    • Try
      • Q(A);
      • Threat
        • DUALS(4)
      • Refutation
        • P(b);CHECK
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • S(h);N_GUARD,N_SPINB(e)::S(F)
      • Refutation
        • P(b);CHECK
  • Actual
    • Q(A);
    • Threat
      • B(G)
    • Vars
      • P(b);CHECK,N_GUARD,S_CUTR(a)::S(F)
      • S(h);N_GUARD,N_SPINB(e)::S(F)
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Developed and maintained by Brian Stephenson.
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