MESON Chess Problem Database

Problem Display
PID: 268105 (5B2/2N5/Qb2B2r/4R2p/pp1k1P1K/1q1P4/3P1n2/3b4 w - - 0 1)

Gvozdjak, Peter

The Problemist, 2022

5B2/2N5/Qb2B2r/4R2p/pp1k1P1K/1q1P4/3P1n2/3b4

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qc2
      • 2.Rd5#
    • 1...Qc4
      • 2.Qxc4#
    • 1...Qd5
      • 2.Rxd5#
    • 1...Qb1
      • 2.Rd5#
      • 2.Qc4#
    • 1...Qb2
      • 2.Rd5#
      • 2.Qc4#
    • 1...Qa3
      • 2.Rd5#
      • 2.Qc4#
    • 1...Qc3
      • 2.Rd5#
    • 1...Qxd3
      • 2.Qxb6#
    • 1...Ba5
      • 2.Bc5#
    • 1...Bc5
      • 2.Bxc5#
    • 1...Bxc7
      • 2.Bc5#
    • 1...Sh1
      • 2.Re4#
    • 1...Sxd3
      • 2.Sb5#
    • 1...Sh3
      • 2.Re4#
    • 1...Se4
      • 2.Rxe4#
    • 1...Sg4
      • 2.Re4#
  • Tries
    • 1.Bxb3?
      • threat
        • 2.Rd5#
        • 2.Qc4#
      • 1...Sxd3
        • 2.Sb5#
        • 2.Qc4#
      • 1...Rc6
        • 2.Rd5#
      • 1...Rd6
        • 2.Qc4#
      • 1...Bf3
        • 2.Qc4#
      • 1...Bxb3!
    • 1.Bg7?
      • threat
        • 2.Rd5#
      • 1...Qxd3
        • 2.Qxb6#
      • 1...Sxd3
        • 2.Sb5#
      • 1...Qd5
        • 2.Rxd5#
      • 1...Rf6!
  • Keys
    • 1.Bf5!
      • threat
        • 2.Sb5#
      • 1...Qxd3
        • 2.Rd5#
      • 1...Bxc7
        • 2.Bc5#
      • 1...Sxd3
        • 2.Re4#
      • 1...Qc4
        • 2.Qxc4#
      • 1...Qd5
        • 2.Rxd5#
      • 1...Se4
        • 2.Rxe4#

This is after

After A Mochalkin & S. Shedey.

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • Q(c);N_GUARD::R1(E)
    • Q(c);N_GUARD::QAR1(F),XQ(c)
    • Q(c);N_GUARD::R1(E),XQ(c)
    • Q(c);SBLOCK,XP(B)::QAB(F),XB(h)
    • B(h);N_GUARD::B(I)
    • B(h);N_GUARD::B(I),XB(h)
    • B(h);N_GUARD,XS(H)::B(I)
    • S(b);N_GUARD::R1(E)
    • S(b);SBLOCK,XP(B)::S(H)
    • S(b);N_GUARD::R1(E),XS(b)
  • Tries
    • Try
      • B(G);XQ(c)
      • Threat
        • DUALS(2)
      • Vars
        • R(i);::R1(E)
        • R(i);::QAR1(F)
        • B(a);::QAR1(F)
      • Refutation
        • B(a);XB(G)
    • Try
      • B(I);
      • Threat
        • B(I)+R(E),DCHECK
      • Vars
        • Q(c);SBLOCK,XP(B)::QAB(F),XB(h)
        • S(b);SBLOCK,XP(B)::S(H)
        • Q(c);::B(I)+R(E),DCHECK,XQ(c)
      • Refutation
        • R(i);
  • Actual
    • B(G);
    • Threat
      • S(H)
    • Vars
      • Q(c);N_GUARD,XP(B)::R1(E)
      • B(h);N_GUARD,XS(H)::B(I)
      • S(b);N_GUARD,XP(B)::R1(E)
      • Q(c);N_GUARD::QAR1(F),XQ(c)
      • Q(c);N_GUARD::R1(E),XQ(c)
      • S(b);N_GUARD::R1(E),XS(b)
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