MESON Chess Problem Database

Problem Display
PID: 146488 (2br2Bn/1pKpPq2/1P6/1pk1NQ1R/PpP5/3P4/2R4b/B2rN1n1 w - - 0 1)

Kemp, Charles Edward

British Chess Magazine, 1933

2br2Bn/1pKpPq2/1P6/1pk1NQ1R/PpP5/3P4/2R4b/B2rN1n1

#2

13 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc4
      • 2.Qf2#
    • 1...Qd5
      • 2.cxd5#
    • 1...Qxh5
      • 2.Qf2#
      • 2.cxb5#
    • 1...Qe6
      • 2.Qf2#
    • 1...Qg6
      • 2.Qf2#
      • 2.cxb5#
    • 1...Qe8
      • 2.Qf2#
      • 2.cxb5#
    • 1...Qxg8
      • 2.Qf2#
    • 1...Qxf5
      • 2.cxb5#
    • 1...Qf6
      • 2.cxb5#
    • 1...Qxe7
      • 2.Qf2#
      • 2.cxb5#
    • 1...Qg7
      • 2.Qf2#
      • 2.cxb5#
    • 1...Qh7
      • 2.Qf2#
      • 2.cxb5#
    • 1...Qf8
      • 2.cxb5#
    • 1...Rb1
      • 2.d4#
    • 1...Rc1
      • 2.d4#
    • 1...Rxe1
      • 2.d4#
    • 1...Rxd3
      • 2.Sxd3#
    • 1...d5
      • 2.cxb5#
    • 1...d6
      • 2.Sd7#
  • Tries
    • 1.cxb5+?
      • 1...Qc4
        • 2.Rxc4#
        • 2.Qf2#
      • 1...Kd5!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qd6#
      • 1...Qxf6
        • 2.cxb5#
      • 1...Qxe7
        • 2.Qf2#
        • 2.cxb5#
      • 1...Rxd3
        • 2.Sxd3#
      • 1...Qd5
        • 2.cxd5#
      • 1...Qe6
        • 2.Qf2#
      • 1...Qg6
        • 2.Qf2#
        • 2.cxb5#
      • 1...d5
        • 2.cxb5#
      • 1...d6
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • Q(i);N_GUARD,P_SPINQ(i),XP(F)::QAB(H)
    • Q(i);OGATE::R(C)+P(F),XQ(i)
    • Q(i);N_GUARD::QAB(H)
    • Q(i);N_GUARD,XB(M)::QAB(H)
    • Q(i);N_GUARD,XQ(H)::R(C)+P(F),XP(e)
    • Q(i);N_GUARD::R(C)+P(F),XP(e)
    • R(a);N_GUARD::P(D)
    • R(a);N_GUARD,XS(B)::P(D)
    • R(a);XP(D)::S(B),XR(a)
    • P(h);P_PINP(L),SBLOCK,S_CUTQ(i)::R(C)+P(F),XP(e)
    • P(h);N_PINS(G),P_PINP(L)::QAR(H)+S(G),DCHECK
  • Tries
    • Try
      • P(F);CHECK,XP(e)
      • Refutation
        • K(f);P-FLIGHT,P_SPINQ(i)
  • Actual
    • Q(H);
    • Threat
      • QAB1(H)
    • Vars
      • Q(i);N_GUARD,XQ(H)::R(C)+P(F),XP(e)
      • R(a);XP(D)::S(B),XR(a)
      • Q(i);OGATE::R(C)+P(F),XQ(i)
      • Q(i);N_GUARD::QAB(H)
      • P(h);P_PINP(L),SBLOCK,S_CUTQ(i)::R(C)+P(F),XP(e)
      • P(h);N_PINS(G),P_PINP(L)::R(I)+S(G),DCHECK
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