MESON Chess Problem Database

Problem Display
PID: 61302 (4R2q/1bKN4/2pQ4/r3p3/r1p1k1p1/5R1n/7B/3BbN2 w - - 0 1)

Shire, David J

Problem Observer, 2005

4R2q/1bKN4/2pQ4/r3p3/r1p1k1p1/5R1n/7B/3BbN2

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qf6
      • 2.Sxf6#
    • 1...Qh5
      • 2.Sf6#
    • 1...Qxe8
      • 2.Sf6#
    • 1...Qg8
      • 2.Sf6#
    • 1...Rc5
      • 2.Sxc5#
    • 1...Ra6
      • 2.Sc5#
    • 1...Ra7
      • 2.Sc5#
    • 1...Ra8
      • 2.Sc5#
    • 1...Bd2
      • 2.Sxd2#
      • 2.Sg3#
    • 1...Bf2
      • 2.Sd2#
    • 1...Bc3
      • 2.Sg3#
    • 1...Bg3
      • 2.Sd2#
      • 2.Sxg3#
    • 1...Bb4
      • 2.Sg3#
    • 1...Bh4
      • 2.Sd2#
    • 1...Sg1
      • 2.Rf4#
    • 1...Sf2
      • 2.Sg3#
      • 2.Rf4#
    • 1...Sf4
      • 2.Rxf4#
    • 1...Sg5
      • 2.Rf4#
    • 1...c3
      • 2.Qd3#
    • 1...gxf3
      • 2.Bc2#
  • Keys
    • 1.Bxe5!
      • threat
        • 2.Qd4#
      • 1...Qxe5
        • 2.Sf6#
      • 1...Rxe5
        • 2.Sc5#
      • 1...gxf3
        • 2.Bc2#
      • 1...Sf4
        • 2.Rxf4#
      • 1...Rd5
        • 2.Qg6#
      • 1...Bf2
        • 2.Sd2#
      • 1...Bc3
        • 2.Sg3#
      • 1...c3
        • 2.Qd3#
      • 1...c5
        • 2.Bxh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 12
  • Sets
    • Q(k);N_GUARD::S(G),XQ(k)
    • Q(k);N_GUARD::S(G)
    • Q(k);N_GUARD,N_SPINP(h),XR(H)::S(G)
    • R(g);N_GUARD::S(G),XR(g)
    • R(g);N_GUARD::S(G)
    • B(a);N_GUARD::S(B)
    • S(b);N_GUARD::R1(D)
    • S(b);N_GUARD::R1(D),XS(b)
    • P(d);N_GUARD::QAB1(E)
    • P(f);SBLOCK,XR(D)::B(A)
  • Actual
    • B(C);XP(h)
    • Threat
      • QAR1(E)
    • Vars
      • Q(k);N_GUARD,P_PINQ(E),P_SPINQ(k),XB(C)::S(G)
      • R(g);N_GUARD,P_SPINR(g),XB(C)::S(G)
      • P(f);SBLOCK,XR(D)::B(A)
      • S(b);N_GUARD::R1(D),XS(b)
      • R(g);SBLOCK::QAB(E)
      • B(a);N_GUARD::S(B)
      • P(d);N_GUARD::QAB1(E)
      • P(i);S_CUTR(g)::R(H)+B(C),XQ(k)
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