MESON Chess Problem Database

Problem Display
PID: 244708 (8/N1p1BRp1/2P3p1/KB1kn1P1/2p2P2/2P4Q/5N2/8 w - - 0 1)

Colaneri, Bruno

Coello-75 JT (Problemas), 2017

8/N1p1BRp1/2P3p1/KB1kn1P1/2p2P2/2P4Q/5N2/8

#2

11 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.Qd7#
    • 1...Sf3
      • 2.Qd7#
    • 1...Sxc6+
      • 2.Bxc6#
    • 1...Sd7
      • 2.Qxd7#
  • Tries
    • 1.Kb4?
      • 1...Sxc6+
        • 2.Bxc6#
      • 1...Sxf7
        • 2.Bxc4#
      • 1...Sg4
        • 2.Bxc4#
      • 1...Sf3
        • 2.Bxc4#
        • 2.Qd7#
      • 1...Sd7
        • 2.Bxc4#
        • 2.Qxd7#
      • 1...Sd3+!
    • 1.Rf6?
      • threat
        • 2.Qe6#
      • 1...Sxc6+
        • 2.Bxc6#
      • 1...Sg4
        • 2.Qg2#
        • 2.Qh1#
        • 2.Qf3#
      • 1...gxf6!
    • 1.Qc8?
      • 1...Sxc6+
        • 2.Bxc6#
      • 1...Sd7
        • 2.Qxd7#
      • 1...Sd3
        • 2.Qd7#
      • 1...Sf3
        • 2.Qd7#
      • 1...Sg4
        • 2.Qd7#
      • 1...Sxf7!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Qxe5#
      • 1...Sxc6+
        • 2.Bxc6#
      • 1...Ke6
        • 2.Bxc4#
      • 1...Sxf7
        • 2.Qe4#
      • 1...Sd3
        • 2.Qe4#
      • 1...Sf3
        • 2.Qe4#
      • 1...Sg4
        • 2.Qe4#
      • 1...Sd7
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD::QAR2(C)
    • S(c);CHECK,OGATE,XP(H)::B(F),XS(c)
    • S(c);N_GUARD::QAR2(C),XS(c)
  • Tries
    • Try
      • K(E);S_FLIGHT
      • Vars
        • S(c);CHECK,OGATE,XP(H)::B(F),XS(c)
        • S(c);N_GUARD,XR(K)::B(F),XP(a)
        • S(c);N_GUARD::B(F),XP(a)
      • Refutation
        • S(c);CHECK
    • Try
      • R(K);
      • Threat
        • QAB1(C)
      • Vars
        • S(c);CHECK,OGATE,XP(H)::B(F),XS(c)
      • Refutation
        • P(f);XR(K)
    • Try
      • Q(C);
      • Vars
        • S(c);CHECK,OGATE,XP(H)::B(F),XS(c)
        • S(c);N_GUARD::QAR2(C),XS(c)
        • S(c);N_GUARD::QAR2(C)
      • Refutation
        • S(c);XR(K)
  • Actual
    • Q(C);
    • Threat
      • QAR1(C),XS(c)
    • Vars
      • S(c);CHECK,OGATE,XP(H)::B(F),XS(c)
      • K(b);P_SPINS(c),S_FLIGHT::B(F),XP(a)
      • S(c);XR(K)::QAB1(C)
      • S(c);::QAB1(C)
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