MESON Chess Problem Database

Problem Display
PID: 52434 (4R3/4b1P1/6QK/1p1r2p1/3pNPP1/RB1k2P1/2Npp3/3qn1B1 w - - 0 1)

Howard, Kenneth Samuel

1st Prize, Newcastle Weekly Chronicle, 1926

4R3/4b1P1/6QK/1p1r2p1/3pNPP1/RB1k2P1/2Npp3/3qn1B1

#2

12 + 10

5089 The Enjoyment of Chess Problems 1943

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.Sb4#
    • 1...Rd6
      • 2.Sb4#
    • 1...Bb4
      • 2.Sxb4#
    • 1...Bf6
      • 2.Sb4#
    • 1...Bd8
      • 2.Sb4#
  • Tries
    • 1.Sd6+?
      • 1...Rf5
        • 2.Ba4#
      • 1...Kc3!
    • 1.Rc8?
      • threat
        • 2.Sf2#
      • 1...Qxc2
        • 2.Bxc2#
        • 2.Bc4#
      • 1...Sxc2
        • 2.Bxc2#
        • 2.Bc4#
      • 1...Rc5
        • 2.Sb4#
      • 1...Bc5!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Sf2#
      • 1...Rd6+
        • 2.Be6#
      • 1...Kxe4
        • 2.Bxd5#
      • 1...Qxc2
        • 2.Bxc2#
      • 1...Sxc2
        • 2.Bxc2#
      • 1...Rc5
        • 2.Sb4#
      • 1...Bc5
        • 2.Qxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • R(h);S_CUTB(j)::S(B)
    • R(h);P_PINQ(I),S_CUTB(j)::S(B)
    • B(j);N_GUARD::S(B),XB(j)
    • B(j);N_GUARD::S(B)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • R(h);P_SPINR(h)::R(C)+B(D)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • R(L);
      • Threat
        • QAB(I)+S(F),DCHECK
      • Vars
        • R(h);S_CUTB(j)::S(B)
      • Refutation
        • B(j);
  • Actual
    • Q(I);
    • Threat
      • S(F)
    • Vars
      • R(h);CHECK,OGATE::R(C)+B(D)
      • K(e);P_SPINB(j),P_SPINR(h),S_FLIGHT,XS(F)::B(D),XR(h)
      • Q(a);OGATE,XS(B)::R(C)+B(D),DCHECK,XQ(a)
      • S(b);OGATE,XS(B)::R(C)+B(D),DCHECK,XS(b)
      • R(h);S_CUTB(j)::S(B)
      • B(j);S_CUTR(h)::QAB(I),XP(g)
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