MESON Chess Problem Database

Problem Display
PID: 186133 (1N1Rb2b/2pq1rB1/2R2p1r/4n1P1/1P1k1PQp/2p4K/2P2P2/7B w - - 0 1)

Bonavia-Hunt, Rev Noel Aubrey

Chess, 1959

1N1Rb2b/2pq1rB1/2R2p1r/4n1P1/1P1k1PQp/2p4K/2P2P2/7B

#2

12 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qd5
      • 2.Rxd5#
    • 1...fxg5
      • 2.f5#
    • 1...f5
      • 2.Qd1#
  • Tries
    • 1.Rc4+?
      • 1...Sxc4
        • 2.Sc6#
      • 1...Kxc4!
  • Keys
    • 1.Rc5!
      • threat
        • 2.fxe5#
      • 1...Sxg4
        • 2.Sc6#
      • 1...fxg5
        • 2.f5#
      • 1...Sf3
        • 2.f5#
      • 1...Qd5
        • 2.Rdxd5#
      • 1...Sd3
        • 2.Sc6#
      • 1...Sc4
        • 2.Sc6#
        • 2.f5#
      • 1...Sc6
        • 2.Sxc6#
        • 2.f5#
      • 1...Sg6
        • 2.Sc6#
      • 1...f5
        • 2.Qd1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • Q(h);N_PINQ(G),OGATE::R1(L),XQ(h)
    • P(e);P_SPINS(d),XP(H)::QAR(G)+P(F)
    • P(e);N_PINQ(G),P_SPINS(d)::QAR(G)
  • Tries
    • Try
      • R(I);CHECK
      • Vars
        • S(d);P_SPINP(e),SBLOCK,XR(I)::S(K)
      • Refutation
        • K(b);N_SPINQ(h),P-FLIGHT,XR(I)
  • Actual
    • R(I);
    • Threat
      • QAR(G)+P(F),XS(d)
    • Vars
      • S(d);N_GUARD,P_SPINP(e),XQ(G)::S(K)
      • P(e);P_SPINS(d),XP(H)::QAR(G)+P(F)
      • S(d);N_GUARD,P_SPINP(e)::QAR(G)+P(F)
      • Q(h);N_PINQ(G),OGATE::R1(L),XQ(h)
      • S(d);N_GUARD,P_SPINP(e)::S(K)
      • P(e);N_PINQ(G),P_SPINS(d)::QAR(G)
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Developed and maintained by Brian Stephenson.
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