MESON Chess Problem Database

Problem Display
PID: 68864 (7Q/b3pr2/Kp3N2/1P2k1P1/1p1q2B1/4B1p1/1N6/4R3 w - - 0 1)

Abbott, Joseph William

The Chess Players' Quarterly Chronicle, 1870

7Q/b3pr2/Kp3N2/1P2k1P1/1p1q2B1/4B1p1/1N6/4R3

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Sc4#
    • 1...Qd2
      • 2.Sc4#
    • 1...Qc4
      • 2.Sxc4#
    • 1...Qd6
      • 2.Sc4#
    • 1...Qd7
      • 2.Sc4#
    • 1...Qd8
      • 2.Sc4#
  • Tries
    • 1.Sd3+?
      • 1...Kd6
        • 2.Qd8#
      • 1...Qxd3!
    • 1.Sd7+?
      • 1...Ke4
        • 2.Qxd4#
      • 1...Kd5
        • 2.Qxd4#
      • 1...Kd6!
    • 1.Qb8+?
      • 1...Qd6
        • 2.Sd3#
        • 2.Sc4#
      • 1...Bxb8!
  • Keys
    • 1.Qd8!
      • threat
        • 2.Qxd4#
      • 1...Qxb2
        • 2.Bd2#
        • 2.Qc7#
        • 2.Qd5#
      • 1...Qxe3
        • 2.Sd3#
      • 1...Qxg4
        • 2.Qd5#
      • 1...Qxd8
        • 2.Sc4#
      • 1...Qd7
        • 2.Sc4#
      • 1...Qc3
        • 2.Qd5#
      • 1...Qc5
        • 2.Sd3#
      • 1...Qd1
        • 2.Sc4#
      • 1...Qd2
        • 2.Sc4#
        • 2.Bxd2#
      • 1...Qd3
        • 2.Sxd3#
      • 1...Qc4
        • 2.Sxc4#
      • 1...Qe4
        • 2.Qc7#
      • 1...Qf4
        • 2.Sd3#
        • 2.Bd4#
        • 2.Qc7#
        • 2.Qd5#
      • 1...Qd5
        • 2.Qxd5#
      • 1...Qd6
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • Q(c);N_GUARD::S(B)
    • Q(c);N_GUARD,P_PINP(E)::S(B),XQ(c)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(d);S_FLIGHT::QAR2(I)
      • Refutation
        • Q(c);P_PINP(E),XS(B)
    • Try
      • S(H);CHECK
      • Vars
        • K(d);OGATE,P-FLIGHT::QAR1(I),XQ(c)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(I);CHECK
      • Refutation
        • B(f);XQ(I)
  • Actual
    • Q(I);
    • Threat
      • QAB1(I),XQ(c)
    • Vars
      • Q(c);N_GUARD,P_SPINQ(c),XB(C)::S(B)
      • Q(c);N_GUARD,XB(D)::QAR1(I)
      • Q(c);N_GUARD,XQ(I)::S(B)
      • Q(c);N_GUARD::S(B)
      • Q(c);N_GUARD::QAR1(I)
      • Q(c);N_GUARD,P_PINP(E)::S(B),XQ(c)
      • Q(c);N_GUARD::QAB(I)
      • Q(c);N_GUARD::QAR1(I),XQ(c)
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