MESON Chess Problem Database

Problem Display
PID: 79194 (q7/5Rp1/B4pQ1/4B2p/7p/r4k2/2P1pNNn/3bK3 w - - 0 1)

Barnes, Barry Peter

The Tablet, 1963

(First published on Sat Mar 16 1963)

q7/5Rp1/B4pQ1/4B2p/7p/r4k2/2P1pNNn/3bK3

#2

8 + 10

15239 Valois Notebooks 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Qxe4#
    • 1...Qb7
      • 2.Bxb7#
    • 1...Qxa6
      • 2.Qe4#
    • 1...Qa7
      • 2.Qe4#
    • 1...Qb8
      • 2.Qe4#
    • 1...Qc8
      • 2.Qe4#
    • 1...Qd8
      • 2.Qe4#
    • 1...Qe8
      • 2.Qe4#
    • 1...Qf8
      • 2.Bb7#
      • 2.Qe4#
    • 1...Qg8
      • 2.Bb7#
      • 2.Qe4#
    • 1...Qh8
      • 2.Bb7#
      • 2.Qe4#
    • 1...Re3
      • 2.Sxh4#
    • 1...Bxc2
      • 2.Bxe2#
    • 1...h3
      • 2.Qg3#
    • 1...f5
      • 2.Rxf5#
  • Tries
    • 1.Rxg7?
      • threat
        • 2.Qf5#
        • 2.Qxf6#
      • 1...Qxa6
        • 2.Qe4#
        • 2.Qf5#
      • 1...Rxa6
        • 2.Qd3#
        • 2.Qf5#
      • 1...Bxc2
        • 2.Bxe2#
      • 1...fxe5
        • 2.Rf7#
        • 2.Qf5#
        • 2.Qf7#
        • 2.Qf6#
      • 1...Qe4
        • 2.Qxe4#
      • 1...Qc6
        • 2.Qf5#
      • 1...Qc8
        • 2.Qe4#
      • 1...Qd8
        • 2.Qe4#
        • 2.Qf5#
      • 1...Qf8
        • 2.Bb7#
        • 2.Qe4#
        • 2.Qf5#
      • 1...Ra4
        • 2.Qd3#
      • 1...f5
        • 2.Qxf5#
      • 1...Sg4!
    • 1.Qxh5+?
      • 1...Sg4
        • 2.Qxg4#
      • 1...Kxg2!
  • Keys
    • 1.Rb7!
      • threat
        • 2.Qe4#
      • 1...Qxb7
        • 2.Bxb7#
      • 1...Bxc2
        • 2.Bxe2#
      • 1...fxe5
        • 2.Rf7#
      • 1...Re3
        • 2.Sxh4#
      • 1...Ra4
        • 2.Rb3#
      • 1...f5
        • 2.Qc6#

This is a version of 79189

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • Q(j);N_GUARD::QAB1(G),XQ(j)
    • Q(j);N_GUARD::B(F),XQ(j)
    • Q(j);N_GUARD,XB(F)::QAB1(G)
    • Q(j);N_GUARD::QAB1(G)
    • R(d);SBLOCK::S(D),XP(f)
    • B(a);N_GUARD,XP(B)::B(F),XP(b)
    • P(f);N_GUARD::QAR1(G)
    • P(h);OGATE::R(H),XP(h)
  • Tries
    • Try
      • R(H);N_PINP(h),XP(i)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);N_GUARD,XP(B)::B(F),XP(b)
        • Q(j);N_GUARD::QAB1(G),XQ(j)
        • Q(j);::QAR2(G)
        • Q(j);N_GUARD::QAB1(G)
        • R(d);N_GUARD::QAR2(G)
        • P(h);::QAR2(G),XP(h)
      • Refutation
        • S(c);
    • Try
      • Q(G);CHECK,XP(g)
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAB1(G),XS(c)
      • Refutation
        • K(e);N_SPINP(h),S_FLIGHT,XS(D)
  • Actual
    • R(H);N_PINP(h)
    • Threat
      • QAB1(G)
    • Vars
      • Q(j);OGATE,XR(H)::B(F),XQ(j)
      • B(a);N_GUARD,XP(B)::B(F),XP(b)
      • P(h);OGATEB,XB(E)::R(H)
      • R(d);SBLOCK::S(D),XP(f)
      • R(d);N_GUARD::R(H)
      • P(h);OGATE::QAB(G)
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