MESON Chess Problem Database

Problem Display
PID: 265216 (2b5/8/2pN2rB/Q4nN1/2Bk2p1/1P6/5P2/2K5 w - - 0 1)

Carra, Arturo

Norsk Sjakkblad, 1928

2b5/8/2pN2rB/Q4nN1/2Bk2p1/1P6/5P2/2K5

#2

8 + 6

2037 Albrecht MT 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Re6
      • 2.Sxf5#
    • 1...Ba6
      • 2.Sxf5#
    • 1...Bb7
      • 2.Sxf5#
    • 1...g3
      • 2.Sf3#
    • 1...c5
      • 2.Qa1#
  • Tries
    • 1.Sgf7?
      • threat
        • 2.Qe5#
      • 1...c5
        • 2.Qd2#
        • 2.Qa1#
      • 1...Re6!
    • 1.Sde4?
      • threat
        • 2.Qc3#
        • 2.Qa1#
        • 2.Qc5#
      • 1...c5
        • 2.Qc3#
        • 2.Qa1#
        • 2.Qxc5#
      • 1...Rxg5!
    • 1.Sdf7?
      • threat
        • 2.Qe5#
      • 1...c5
        • 2.Qd2#
        • 2.Qa1#
      • 1...Re6!
    • 1.Qc5+?
      • 1...Kc3
        • 2.Sge4#
        • 2.Sde4#
      • 1...Kxc5!
    • 1.Qd5+?
      • 1...Kc3
        • 2.Qd2#
      • 1...cxd5!
  • Keys
    • 1.f4!
      • threat
        • 2.Qe5#
      • 1...Ke3
        • 2.Qd2#
      • 1...gxf4 ep
        • 2.Sxf3#
      • 1...Re6
        • 2.Sxf5#
      • 1...c5
        • 2.Qd2#

This is a version of 202292

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(e);S_CUTB(f)::S(G),XS(c)
    • B(f);N_GUARD::S(G),XS(c)
    • P(b);N_GUARD::S(F)
    • P(d);SBLOCK::QAB(E)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAB1(E)
      • Refutation
        • R(e);
    • Try
      • S(G);
      • Threat
        • DUALS(3)
      • Refutation
        • R(e);XS(F)
    • Try
      • S(G);
      • Threat
        • QAB1(E)
      • Refutation
        • R(e);
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(E)
      • Refutation
        • P(d);XQ(E)
  • Actual
    • P(B);
    • Threat
      • QAB1(E)
    • Vars
      • K(a);N_GUARD,S_FLIGHT::QAB1(E)
      • P(b);EP,N_GUARD,XP(B)::S(F),XP(b)
      • R(e);S_CUTB(f)::S(G),XS(c)
      • P(d);SBLOCK::QAR2(E)
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