MESON Chess Problem Database

Problem Display
PID: 108005 (1BQ5/5nb1/1p4r1/1P1k2p1/6B1/1N3P2/p3NPK1/r3R3 w - - 0 1)

Driver, John Edward

Chess, 1954

1BQ5/5nb1/1p4r1/1P1k2p1/6B1/1N3P2/p3NPK1/r3R3

#2

10 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rc6
      • 2.Qxc6#
    • 1...Re6
      • 2.Bxe6#
      • 2.Qxe6#
    • 1...Rf6
      • 2.Sc3#
    • 1...Bc3
      • 2.Sxc3#
    • 1...Bf6
      • 2.Be6#
      • 2.Qe6#
      • 2.Qc6#
    • 1...Bh6
      • 2.Sc3#
    • 1...Bf8
      • 2.Sc3#
    • 1...Se5
      • 2.Sc3#
  • Tries
    • 1.Rd1+?
      • 1...Bd4
        • 2.Sc3#
        • 2.Rxd4#
      • 1...Rxd1!
    • 1.Qf5+?
      • 1...Be5
        • 2.Qe4#
      • 1...Se5
        • 2.Qe4#
      • 1...Kc4!
    • 1.Qb7+?
      • 1...Rc6
        • 2.Qxc6#
      • 1...Kc4!
  • Keys
    • 1.f4!
      • threat
        • 2.Bf3#
      • 1...Ke4
        • 2.Qf5#
      • 1...gxf4
        • 2.Sxf4#
      • 1...Rc6
        • 2.Qxc6#
      • 1...Re6
        • 2.Qxe6#
      • 1...Se5
        • 2.Sc3#
      • 1...Sd6
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • R(f);N_GUARD::QAB1(J),XR(f)
    • R(f);S_CUTB(h)::S(B)
    • B(h);N_GUARD::S(B),XB(h)
    • B(h);N_GUARD::S(B)
    • S(g);S_CUTB(h)::S(B)
  • Tries
    • Try
      • R(A);CHECK
      • Refutation
        • R(a);XR(A)
    • Try
      • Q(J);CHECK
      • Vars
        • B(h);P_SPINB(h)::QAB1(J)
        • S(g);P_SPINS(g)::QAB1(J)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(J);CHECK
      • Vars
        • R(f);N_GUARD,P_SPINR(f)::QAB1(J),XR(f)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • P(F);
    • Threat
      • B(G)
    • Vars
      • K(c);S_FLIGHT::QAB1(J)
      • P(d);P_PINB(G),XP(F)::S(B),XP(d)
      • R(f);N_GUARD::QAB1(J),XR(f)
      • S(g);S_CUTB(h)::S(B)
      • S(g);S_CUTR(f)::QAB1(J)
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