MESON Chess Problem Database

Problem Display
PID: 34712 (3Q4/8/p3p2N/4kN1p/1R2n3/K2B2bn/3BPq2/5R1b w - - 0 1)

Bantysh, Nikolai Ivanovich

Comm., Uralski Problemist, 2000

3Q4/8/p3p2N/4kN1p/1R2n3/K2B2bn/3BPq2/5R1b

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Sf7#
      • 2.Qd4#
    • 1...Qg1
      • 2.Sf7#
    • 1...Qe3
      • 2.Sf7#
    • 1...Qd4
      • 2.Sf7#
      • 2.Qxd4#
    • 1...Qc5
      • 2.Sf7#
    • 1...Qb6
      • 2.Sf7#
    • 1...Qxf1
      • 2.Qd4#
    • 1...Qxe2
      • 2.Sf7#
      • 2.Qd4#
    • 1...Qg2
      • 2.Sf7#
      • 2.Qd4#
    • 1...Qh2
      • 2.Sf7#
      • 2.Qd4#
    • 1...Qf3
      • 2.Qd4#
    • 1...Qf4
      • 2.Qd4#
    • 1...Qxf5
      • 2.Qd4#
    • 1...Sxd2
      • 2.Sf7#
    • 1...Sc3
      • 2.Sf7#
    • 1...Sc5
      • 2.Sf7#
    • 1...Sf6
      • 2.Sf7#
      • 2.Qd6#
  • Tries
    • 1.Bc3+?
      • 1...Qd4
        • 2.Sf7#
        • 2.Bxd4#
        • 2.Qxd4#
      • 1...Sxc3
        • 2.Sf7#
      • 1...Kf4!
    • 1.Qc7+?
      • 1...Kd5
        • 2.Se7#
        • 2.Bc4#
      • 1...Kf6
        • 2.Qg7#
      • 1...Sd6!
  • Keys
    • 1.Se3!
      • threat
        • 2.Sc4#
      • 1...Kf4
        • 2.Seg4#
        • 2.Qf6#
      • 1...Qxe3
        • 2.Sf7#
      • 1...Sxd2
        • 2.Qd4#
      • 1...Sd6
        • 2.Bc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • Q(b);::S(H)
    • Q(b);P_PINB(E)::S(H)
    • Q(b);P_PINR(F)::S(H)
    • Q(b);N_GUARD,XR(A)::QAB1(I)
    • Q(b);N_GUARD,P_PINB(E)::QAB1(I)
    • Q(b);N_GUARD::QAB1(I)
    • Q(b);N_GUARD,XS(G)::QAB1(I)
    • S(e);XB(B)::S(H)
    • S(e);::S(H)
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • S(e);XB(B)::S(H)
      • Refutation
        • K(f);P_SPINQ(b),P_SPINS(e),S_FLIGHT
    • Try
      • Q(I);CHECK
      • Vars
        • K(f);S_FLIGHT::QAB1(I)
      • Refutation
        • S(e);P_SPINS(e)
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • Q(b);N_GUARD,P_PINB(E),XS(G)::S(H)
      • S(e);XB(B)::QAB1(I)
      • S(e);N_GUARD::B(B)
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