MESON Chess Problem Database

Problem Display
PID: 21393 (1K6/8/pQ1pp3/Rb1pkBB1/6RN/5r2/1q1N3n/4rn2 w - - 0 1)

Chandler, Guy Wills

Natal Mercury, 1918

1K6/8/pQ1pp3/Rb1pkBB1/6RN/5r2/1q1N3n/4rn2

#2

8 + 11

14868 Pirnie Collection 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Qd4#
    • 1...Qa3
      • 2.Qd4#
    • 1...Qd4
      • 2.Qxd4#
    • 1...Qb1
      • 2.Qd4#
    • 1...Qa2
      • 2.Qd4#
    • 1...Qc2
      • 2.Qd4#
    • 1...Qb3
      • 2.Qd4#
    • 1...Rc3
      • 2.Qd4#
    • 1...Rxf5
      • 2.Sg6#
    • 1...Be2
      • 2.Re4#
    • 1...Bd3
      • 2.Qxb2#
    • 1...Ba4
      • 2.Sc4#
    • 1...Bc4
      • 2.Sxc4#
    • 1...Bc6
      • 2.Sc4#
    • 1...Bd7
      • 2.Sc4#
    • 1...Be8
      • 2.Sc4#
    • 1...Sxg4
      • 2.Sdxf3#
  • Keys
    • 1.Qb7!
      • threat
        • 2.Qg7#
      • 1...Rxf5
        • 2.Sg6#
      • 1...Sxg4
        • 2.Sdxf3#
      • 1...exf5
        • 2.Qe7#
      • 1...Be2
        • 2.Re4#
      • 1...Bd3
        • 2.Qxb2#
      • 1...Ba4
        • 2.Sc4#
      • 1...Bc4
        • 2.Sxc4#
      • 1...Bc6
        • 2.Sc4#
      • 1...Bd7
        • 2.Sc4#
      • 1...Be8
        • 2.Sc4#
      • 1...d4
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • Q(c);N_GUARD::QAB1(G)
    • Q(c);N_GUARD::QAB1(G),XQ(c)
    • R(e);S_CUTQ(c)::QAB1(G)
    • R(e);SBLOCK,XB(E)::S(C)
    • B(f);P_PINQ(G),P_SPINP(g),S_CUTR(a)::R1(B)
    • B(f);OGATE,P_PINQ(G),P_SPINP(g)::QAB(G),XQ(c)
    • B(f);N_GUARD,P_PINQ(G),P_SPINP(g)::S(A)
    • B(f);N_GUARD,P_PINQ(G),P_SPINP(g)::S(A),XB(f)
    • S(d);N_GUARD,XR(B)::S(A),XR(e)
  • Actual
    • Q(G);
    • Threat
      • QAB(G)
    • Vars
      • R(e);SBLOCK,XB(E)::S(C)
      • S(d);N_GUARD,XR(B)::S(A),XR(e)
      • P(k);OGATEB,XB(E)::QAR2(G)
      • B(f);P_PINQ(G),P_SPINP(g),S_CUTR(a)::R1(B)
      • B(f);OGATE,P_PINQ(G),P_SPINP(g)::QAB(G),XQ(c)
      • B(f);N_GUARD,P_PINQ(G),P_SPINP(g)::S(A)
      • B(f);N_GUARD,P_PINQ(G),P_SPINP(g)::S(A),XB(f)
      • P(g);N_GUARD,P_SPINB(f)::S(A)
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Developed and maintained by Brian Stephenson.
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