MESON Chess Problem Database

Problem Display
PID: 251031 (2r1R3/2n5/1p2b3/R4p1r/Q3PP2/3k4/3N1Kn1/B4N2 w - - 0 1)

Janevski, Zivko

Uralski Problemist, 2011

2r1R3/2n5/1p2b3/R4p1r/Q3PP2/3k4/3N1Kn1/B4N2

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bb3
      • 2.Qxb3#
    • 1...Bc4
      • 2.Qxc4#
    • 1...Bd7
      • 2.Qb3#
      • 2.Qc4#
    • 1...fxe4
      • 2.Qxe4#
  • Tries
    • 1.Sf3?
      • threat
        • 2.Se5#
      • 1...Bb3
        • 2.Qxb3#
      • 1...Bc4
        • 2.Qd1#
      • 1...fxe4!
    • 1.Rc5?
      • threat
        • 2.Rc3#
        • 2.Qc2#
        • 2.Qd4#
      • 1...Sxe8
        • 2.Qc2#
        • 2.Qd4#
      • 1...Rd8
        • 2.Rc3#
        • 2.Qc2#
      • 1...Bb3
        • 2.Rc3#
        • 2.Qxb3#
        • 2.Qd4#
      • 1...Bc4
        • 2.Qxc4#
      • 1...Se1
        • 2.Rc3#
        • 2.Qd4#
      • 1...Se3
        • 2.Rc3#
        • 2.Qd4#
      • 1...Sb5
        • 2.Qc2#
      • 1...Sd5
        • 2.Qc2#
        • 2.Qb5#
        • 2.Qc4#
        • 2.Qd4#
      • 1...Sa6
        • 2.Qc2#
        • 2.Qd4#
      • 1...Sa8
        • 2.Qc2#
        • 2.Qd4#
      • 1...bxc5!
    • 1.Qb5+?
      • 1...Kc2
        • 2.Qb1#
      • 1...Bc4
        • 2.Qxc4#
        • 2.Qb1#
      • 1...Sxb5!
    • 1.Qa3+?
      • 1...Bb3
        • 2.Qxb3#
      • 1...Kc2!
    • 1.exf5?
      • threat
        • 2.Qe4#
      • 1...Bxf5
        • 2.Qb3#
        • 2.Qc4#
      • 1...Bc4
        • 2.Qxc4#
      • 1...Bd5!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Se5#
      • 1...Kxe4
        • 2.Sb2#
      • 1...Bxc4
        • 2.Qd1#
      • 1...fxe4
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(f);N_GUARD::QAR2(E),XB(f)
    • B(f);N_GUARD::QAB1(E),XB(f)
    • P(c);OGATE,XP(F)::QAB1(E),XP(c)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • B(f);N_GUARD::QAR2(E),XB(f)
        • B(f);SBLOCK::QAR2(E)
      • Refutation
        • P(c);XP(F)
    • Try
      • R(H);
      • Threat
        • DUALS(3)
      • Vars
        • B(f);N_GUARD::QAB1(E),XB(f)
        • S(g);::QAB1(E)
      • Refutation
        • P(e);XR(H)
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(E)
      • Refutation
        • S(g);XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::QAR2(E),XB(f)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(F);XP(c)
      • Threat
        • QAB1(E)
      • Vars
        • B(f);N_GUARD::QAB1(E),XB(f)
      • Refutation
        • B(f);
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(b);N_GUARD,P_SPINB(f),S_FLIGHT,XP(F)::QAR(E)+S(C)
      • B(f);SBLOCK,XS(C)::QAR2(E)
      • P(c);SBLOCK,XP(F)::QAR2(E)
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