MESON Chess Problem Database

Problem Display
PID: 156292 (3R2n1/1K1P4/2P1P1p1/p1kB1pR1/P1N4Q/bPP2P2/N3bqPB/3n4 w - - 0 1)

Barnes, Barry Peter

The Problemist, 2014

3R2n1/1K1P4/2P1P1p1/p1kB1pR1/P1N4Q/bPP2P2/N3bqPB/3n4

#2

16 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Qd4#
    • 1...Qg3
      • 2.Qd4#
    • 1...Qd4
      • 2.Qxd4#
    • 1...Qf1
      • 2.Qd4#
    • 1...Qxg2
      • 2.Qd4#
    • 1...Qxf3
      • 2.Qd4#
    • 1...Bxc4
      • 2.Qxc4#
    • 1...Se3
      • 2.Qd4#
    • 1...f4
      • 2.Be4#
  • Tries
    • 1.Rxf5?
      • threat
        • 2.Bd6#
      • 1...Bxc4
        • 2.Qxc4#
      • 1...Qg3
        • 2.Qd4#
      • 1...gxf5!
    • 1.Qe4?
      • threat
        • 2.Bd6#
      • 1...Bxc4
        • 2.Qxc4#
      • 1...Qg3
        • 2.Qd4#
      • 1...f4!
    • 1.Qf4?
      • threat
        • 2.Qd6#
      • 1...Kxd5
        • 2.Qe5#
      • 1...Qg3
        • 2.Qd4#
      • 1...Sxc3!
  • Keys
    • 1.Bd6+!
      • 1...Kxd5
        • 2.Qe4#

This is a version of 155246

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • Q(c);N_GUARD::QAB1(I)
    • Q(c);N_GUARD::QAB1(I),XQ(c)
    • Q(c);N_GUARD,XP(B)::QAB1(I)
    • Q(c);N_GUARD,XP(F)::QAB1(I)
    • B(b);OGATE,XS(H)::QAR1(I),XB(b)
    • S(a);S_CUTQ(c)::QAB1(I)
    • P(g);OGATEB::R(K)+B(J)
  • Tries
    • Try
      • R(K);XP(g)
      • Threat
        • B(C)
      • Vars
        • B(b);OGATE,XS(H)::QAR1(I),XB(b)
        • Q(c);N_GUARD::QAB1(I)
      • Refutation
        • P(h);XR(K)
    • Try
      • Q(I);
      • Threat
        • B(C)
      • Vars
        • B(b);OGATE,XS(H)::QAR1(I),XB(b)
        • Q(c);N_GUARD::QAB1(I)
      • Refutation
        • P(g);
    • Try
      • Q(I);
      • Threat
        • QAB1(I)
      • Vars
        • K(f);OGATEB,P-FLIGHT,P_SPINP(g),XB(J)::QAR1(I)
        • Q(c);N_GUARD::QAB1(I)
      • Refutation
        • S(a);XP(E)
  • Actual
    • B(C);CHECK
    • Vars
      • K(f);P-FLIGHT,P_SPINP(g),XB(J)::QAB1(I)
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Developed and maintained by Brian Stephenson.
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