MESON Chess Problem Database

Problem Display
PID: 62681 (3n4/1rP5/Bn1pN3/N2k1K2/1R1PppQ1/8/6p1/4rqb1 w - - 0 1)

Hainsworth, AE

Chess, 1944

3n4/1rP5/Bn1pN3/N2k1K2/1R1PppQ1/8/6p1/4rqb1

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qe2
      • 2.Sxf4#
    • 1...Qd3
      • 2.Sxf4#
    • 1...Qb5
      • 2.Sxf4#
      • 2.Rxb5#
    • 1...Qxa6
      • 2.Sxf4#
    • 1...Qf2
      • 2.Rb5#
    • 1...Qf3
      • 2.Rb5#
    • 1...Re2
      • 2.Rb5#
    • 1...Rxc7
      • 2.Sxc7#
    • 1...Bf2
      • 2.Sxf4#
    • 1...Bxd4
      • 2.Rxd4#
    • 1...Sxe6
      • 2.Bxb7#
    • 1...Sf7
      • 2.Bxb7#
    • 1...f3
      • 2.Sf4#
  • Tries
    • 1.Bxb7+?
      • 1...Sc6
        • 2.Bxc6#
      • 1...Sxb7!
  • Keys
    • 1.Qe2!
      • threat
        • 2.Rb5#
      • 1...Qxe2
        • 2.Sxf4#
      • 1...Rxc7
        • 2.Sxc7#
      • 1...Bxd4
        • 2.Rxd4#
      • 1...Sxe6
        • 2.Bxb7#
      • 1...Sc4
        • 2.Bxc4#
      • 1...Rb1
        • 2.Qxe4#
      • 1...Rc1
        • 2.Qxe4#
      • 1...Sa4
        • 2.Bc4#
      • 1...Sd7
        • 2.Bc4#
      • 1...Sa8
        • 2.Bc4#
      • 1...Sc8
        • 2.Bc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 8
  • Sets
    • Q(b);N_GUARD::S(G),XP(f)
    • Q(b);N_GUARD,XB(F)::S(G),XP(f)
    • Q(b);N_GUARD::R(A)
    • R(a);S_CUTQ(b)::R(A)
    • R(j);XP(H)::S(G),XR(j)
    • B(c);S_CUTQ(b)::S(G),XP(f)
    • B(c);OGATE,XP(B)::R1(A),XB(c)
    • S(k);N_GUARD,XS(G)::B(F),XR(j)
    • S(k);N_GUARD::B(F),XR(j)
    • P(f);S_CUTQ(b)::S(G)
  • Tries
    • Try
      • B(F);CHECK,XR(j)
      • Vars
        • S(k);N_GUARD,P_SPINS(k)::B(F),XS(k)
      • Refutation
        • S(k);XB(F)
  • Actual
    • Q(C);
    • Threat
      • R(A)
    • Vars
      • Q(b);N_GUARD,XQ(C)::S(G),XP(f)
      • R(j);XP(H)::S(G),XR(j)
      • B(c);OGATE,XP(B)::R1(A),XB(c)
      • S(k);N_GUARD,XS(G)::B(F),XR(j)
      • S(h);N_GUARD::B(F),XS(h)
      • R(a);N_GUARD::QAB1(C),XP(e)
      • S(h);N_GUARD::B(F)
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