MESON Chess Problem Database

Problem Display
PID: 56980 (1b2Rn2/r7/6p1/2pN1kPN/4n2P/1Q1B1p1K/2bqp3/2B5 w - - 0 1)

Rice, John Michael

2nd Prize, Kolnische Rundschau, 1969

1b2Rn2/r7/6p1/2pN1kPN/4n2P/1Q1B1p1K/2bqp3/2B5

#2

9 + 11

3751 FIDE Album (1968-1970) 1977
5174 Chess Problem Spectrum 2003

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Se3#
    • 1...Qc3
      • 2.Se3#
    • 1...Qe3
      • 2.Sxe3#
    • 1...Qb4
      • 2.Se3#
    • 1...Qa5
      • 2.Se3#
    • 1...Qd1
      • 2.Se3#
    • 1...Ra1
      • 2.Sg7#
    • 1...Ra2
      • 2.Sg7#
    • 1...Ra3
      • 2.Sg7#
    • 1...Ra4
      • 2.Sg7#
    • 1...Ra5
      • 2.Sg7#
    • 1...Ra6
      • 2.Sg7#
    • 1...Rc7
      • 2.Sg3#
    • 1...Rg7
      • 2.Sxg7#
    • 1...Ra8
      • 2.Sg7#
    • 1...Bd1
      • 2.Bxe4#
    • 1...Bxb3
      • 2.Bxe4#
    • 1...Bg3
      • 2.Sxg3#
    • 1...Bc7
      • 2.Sg7#
    • 1...Sd7
      • 2.Sg7#
  • Tries
    • 1.Se7+?
      • 1...Ke5
        • 2.Qd5#
      • 1...Rxe7!
  • Keys
    • 1.Sc7!
      • threat
        • 2.Qd5#
        • 2.Qf7#
      • 1...Qxg5
        • 2.Qd5#
      • 1...Qxd3
        • 2.Sg7#
      • 1...Rxc7
        • 2.Qd5#
      • 1...Bxb3
        • 2.Bxe4#
      • 1...Bxd3
        • 2.Qd5#
      • 1...Bxc7
        • 2.Qf7#
      • 1...gxh5
        • 2.Qf7#
      • 1...Se6
        • 2.Qd5#
        • 2.Qxe6#
      • 1...Qc3
        • 2.Sg3#
      • 1...Qf4
        • 2.Sg7#
        • 2.Qf7#
      • 1...Ra6
        • 2.Qd5#
      • 1...Sd7
        • 2.Qe6#
      • 1...Sh7
        • 2.Qd5#
        • 2.Qe6#
      • 1...c4
        • 2.Qb5#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 5
    • REMOVED MATES = 14
  • Sets
    • Q(b);N_GUARD::S(F)
    • Q(b);N_GUARD::S(F),XQ(b)
    • R(i);N_GUARD::S(H)
    • R(i);S_CUTB(j)::S(H)
    • R(i);N_GUARD::S(H),XR(i)
    • B(a);N_GUARD::B(C),XS(e)
    • B(a);N_GUARD,XQ(B)::B(C),XS(e)
    • B(j);N_GUARD::S(H),XB(j)
    • B(j);S_CUTR(i)::S(H)
    • S(k);S_CUTR(i)::S(H)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(g);N_SPINS(e),P-FLIGHT::QAR1(B)
      • Refutation
        • R(i);XS(F)
  • Actual
    • S(F);
    • Threat
      • DUALS(2)
    • Vars
      • Q(b);XP(G)::QAR2(B)
      • Q(b);N_SPINS(e),XB(C)::S(H)
      • R(i);XS(F)::QAR2(B)
      • B(a);N_GUARD,XQ(B)::B(C),XS(e)
      • B(a);N_SPINS(e),XB(C)::QAR2(B)
      • B(j);XS(F)::QAR2(B)
      • P(h);XS(H)::QAR2(B)
      • Q(b);::S(H)
      • R(i);::QAR2(B)
      • S(k);N_GUARD::QAB1(B)
      • P(f);OGATEB::QAR(B)
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