MESON Chess Problem Database

Problem Display
PID: 265654 (2K2B2/5Q2/n3r1N1/1P1k4/2RN4/3P3b/7b/3n4 w - - 0 1)

Backe, Espen

Backe, Odd Erik

The Problemist, 1996

2K2B2/5Q2/n3r1N1/1P1k4/2RN4/3P3b/7b/3n4

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Qf3#
    • 1...Bd6
      • 2.Qb7#
    • 1...Bf1
      • 2.Qxe6#
    • 1...Bg2
      • 2.Qxe6#
  • Tries
    • 1.Sc2?
      • threat
        • 2.Rd4#
      • 1...Be5
        • 2.Qf3#
      • 1...Bd6
        • 2.Qb7#
      • 1...Bg1!
    • 1.Sb3?
      • threat
        • 2.Rd4#
      • 1...Be5
        • 2.Qf3#
      • 1...Bg1!
    • 1.Sf3?
      • threat
        • 2.Rd4#
      • 1...Bg1
        • 2.Sf4#
      • 1...Bd6
        • 2.Qb7#
      • 1...Be5!
    • 1.Sc6?
      • threat
        • 2.Rd4#
      • 1...Bg1
        • 2.Sf4#
      • 1...Be5
        • 2.Qf3#
      • 1...Bd6!
    • 1.Sf4+?
      • 1...Ke5
        • 2.Sf3#
      • 1...Bxf4!
    • 1.Qd7+?
      • 1...Bd6
        • 2.Qc6#
        • 2.Qb7#
      • 1...Rd6!
  • Keys
    • 1.Se2!
      • threat
        • 2.Rd4#
      • 1...Bg1
        • 2.Sef4#
      • 1...Be5
        • 2.Qf3#
      • 1...Bd6
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(b);::QAB(F)
    • B(c);N_GUARD::QAB1(F),XR(f)
  • Tries
    • Try
      • S(C);
      • Threat
        • R1(B)
      • Vars
        • B(b);::QAB(F)
      • Refutation
        • B(b);
    • Try
      • S(C);
      • Threat
        • R1(B)
      • Vars
        • B(b);::QAB(F)
      • Refutation
        • B(b);
    • Try
      • S(C);
      • Threat
        • R1(B)
      • Vars
        • B(b);N_GUARD::S(E)
        • B(b);::QAB(F)
      • Refutation
        • B(b);
    • Try
      • S(C);
      • Threat
        • R1(B)
      • Vars
        • B(b);N_GUARD::S(E)
        • B(b);::QAB(F)
      • Refutation
        • B(b);
    • Try
      • S(E);CHECK
      • Vars
        • K(d);N_SPINR(f),P-FLIGHT,S_CUTB(b)::S(C)
      • Refutation
        • B(b);XS(E)
    • Try
      • Q(F);CHECK,N_PINR(f)
      • Refutation
        • R(f);P_PINQ(F),P_SPINR(f)
  • Actual
    • S(C);
    • Threat
      • R1(B)
    • Vars
      • B(b);N_GUARD::S(C)
      • B(b);::QAB(F)
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