MESON Chess Problem Database

Problem Display
PID: 72362 (7K/6Rp/2B1pn1P/B1r5/R3pkNN/8/4pr2/2b3Qn w - - 0 1)

Hardcastle, C

Chess, 1953

7K/6Rp/2B1pn1P/B1r5/R3pkNN/8/4pr2/2b3Qn

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bb2
      • 2.Bd2#
    • 1...Bd2
      • 2.Bxd2#
    • 1...Ba3
      • 2.Bd2#
    • 1...Sg3
      • 2.Qxf2#
    • 1...Sxg4
      • 2.Rxe4#
    • 1...Sh5
      • 2.Rxe4#
    • 1...Sd7
      • 2.Rxe4#
    • 1...Se8
      • 2.Rxe4#
    • 1...Sg8
      • 2.Rxe4#
  • Tries
    • 1.Bc7+?
      • 1...Re5
        • 2.Bxe5#
      • 1...e5!
    • 1.Qh2+?
      • 1...Sg3
        • 2.Qxf2#
      • 1...Rxh2!
  • Keys
    • 1.Se5!
      • threat
        • 2.Qg5#
      • 1...Ke3
        • 2.Sg2#
      • 1...Kxe5
        • 2.Bc7#
      • 1...Rxe5
        • 2.Qxc1#
      • 1...Rg2
        • 2.Sd3#
      • 1...Sg3
        • 2.Qxg3#
      • 1...Sg4
        • 2.Rxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • B(a);N_GUARD::B(E)
    • B(a);N_GUARD::B(E),XB(a)
    • S(b);N_GUARD::QAR2(A),XR(d)
    • S(i);N_GUARD,XS(C)::R1(B),XP(e)
    • S(i);N_GUARD::R1(B),XP(e)
  • Tries
    • Try
      • B(E);CHECK
      • Vars
        • R(g);N_GUARD,P_SPINR(g)::B(E),XR(g)
      • Refutation
        • P(h);
    • Try
      • Q(A);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR2(A),XR(d)
      • Refutation
        • R(d);XQ(A)
  • Actual
    • S(C);
    • Threat
      • QAB1(A)
    • Vars
      • K(f);N_SPINP(e),P_SPINR(d),S_FLIGHT::S(D)
      • K(f);N_SPINP(e),OGATEB,S_FLIGHT,XS(C)::B(E)
      • R(g);N_GUARD,SBLOCK,XS(C)::QAB(A),XB(a)
      • R(d);::S(C)
      • S(b);N_GUARD::QAB1(A),XS(b)
      • S(i);N_GUARD::R1(B),XP(e)
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