MESON Chess Problem Database

Problem Display
PID: 175287 (2B2b2/2B2pp1/N1p1p1Pq/3k4/4p1N1/1K5p/3P1Q2/8 w - - 0 1)

Coppens, JP

Brisbane Courier, 1920

2B2b2/2B2pp1/N1p1p1Pq/3k4/4p1N1/1K5p/3P1Q2/8

#2

8 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd2
      • 2.Qxd2#
    • 1...Bb4
      • 2.Sxb4#
    • 1...Bc5
      • 2.Qxc5#
    • 1...c5
      • 2.Bb7#
  • Tries
    • 1.Be5?
      • threat
        • 2.Sc7#
        • 2.Qd4#
      • 1...Qxd2
        • 2.Sc7#
        • 2.Qxd2#
      • 1...e3
        • 2.Qf3#
      • 1...c5
        • 2.Bb7#
      • 1...Bc5
        • 2.Sc7#
        • 2.Qxc5#
      • 1...Bd6
        • 2.Qd4#
      • 1...Qe3+!
    • 1.Bxe6+?
      • 1...Kxe6
        • 2.Qxf7#
      • 1...fxe6!
  • Keys
    • 1.Kc3!
      • threat
        • 2.Qd4#
      • 1...Qxd2+
        • 2.Qxd2#
      • 1...Qe3+
        • 2.Sxe3#
      • 1...Bb4+
        • 2.Sxb4#
      • 1...e3
        • 2.Qf3#
      • 1...c5
        • 2.Bb7#
      • 1...Bc5
        • 2.Qxc5#
      • 1...e5
        • 2.Qxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(f);OGATE,XP(A)::QAR(B),XQ(f)
    • B(i);N_GUARD::S(E),XB(i)
    • B(i);N_GUARD::QAR1(B),XB(i)
    • P(d);OGATEB::B(H)
  • Tries
    • Try
      • B(G);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);OGATEB::QAB(B)
        • P(d);OGATEB::B(H)
        • B(i);::QAR1(B)
      • Refutation
        • Q(f);CHECK
    • Try
      • B(H);CHECK,XP(e)
      • Vars
        • K(c);S_FLIGHT,XB(H)::QAB1(B),XP(g)
      • Refutation
        • P(g);XB(H)
  • Actual
    • K(C);P-FLIGHT
    • Threat
      • QAR1(B)
    • Vars
      • Q(f);CHECK,OGATE,XP(A)::QAR(B),XQ(f)
      • Q(f);CHECK,N_GUARD::S(D),XQ(f)
      • B(i);CHECK,N_GUARD::S(E),XB(i)
      • P(b);OGATEB::QAB(B)
      • P(d);OGATEB::B(H)
      • B(i);N_GUARD::QAR1(B),XB(i)
      • P(e);OGATEB::QAB(B),XP(g)
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