MESON Chess Problem Database

Problem Display
PID: 146478 (4Q3/3p3R/p7/Rbnk4/pPN1rpK1/p2p1B2/P2P2N1/B7 w - - 0 1)

Kemp, Charles Edward

Pittsburgh Sun, 1926

(First published on Sat Jun 12 1926)

4Q3/3p3R/p7/Rbnk4/pPN1rpK1/p2p1B2/P2P2N1/B7

#2

11 + 10

15044 Kemp Archive 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc4
      • 2.Qxd7#
    • 1...Bc6
      • 2.Rxc5#
      • 2.Qf7#
      • 2.Qxe4#
      • 2.Qg8#
    • 1...Sb3
      • 2.Qxe4#
    • 1...Sb7
      • 2.Qxe4#
    • 1...d6
      • 2.Sb6#
  • Tries
    • 1.Sge3+?
      • 1...Kc6
        • 2.Qc8#
      • 1...fxe3+!
    • 1.Sxf4+?
      • 1...Kc6
        • 2.Qc8#
      • 1...Kxc4!
    • 1.Rh5+?
      • 1...Kc6
        • 2.Qc8#
      • 1...Kxc4!
    • 1.Qh5+?
      • 1...Kxc4
        • 2.Qxc5#
      • 1...Ke6
        • 2.Qf7#
        • 2.Qf5#
      • 1...Kc6!
    • 1.Qe5+?
      • 1...Kxc4
        • 2.Qxc5#
      • 1...Kc6!
  • Keys
    • 1.Qc8!
      • 1...Kxc4
        • 2.Qxc5#
      • 1...Ke6
        • 2.Qg8#
      • 1...Bxc4
        • 2.Qxd7#
      • 1...Se6
        • 2.Rxd7#
      • 1...Bc6
        • 2.Qg8#
      • 1...Sb3
        • 2.Sxf4#
      • 1...Sb7
        • 2.Sxf4#
      • 1...d6
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(f);N_GUARD,P_SPINS(g),SBLOCK,XS(G)::QAR2(K),XP(j)
    • S(g);N_GUARD,P_SPINB(f)::QAB1(K),XR(d)
    • P(j);SBLOCK::S(G)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(h);P_SPINP(j),S_FLIGHT::QAR2(K)
      • Refutation
        • P(e);CHECK,XS(D)
    • Try
      • S(D);CHECK,P_SPINS(D),XP(e)
      • Vars
        • K(h);P_SPINP(j),S_FLIGHT::QAR2(K)
      • Refutation
        • K(h);N_SPINR(d),S_FLIGHT,XS(G)
    • Try
      • R(J);CHECK
      • Vars
        • K(h);P_SPINP(j),S_FLIGHT::QAR2(K)
      • Refutation
        • K(h);N_SPINR(d),S_FLIGHT,XS(G)
    • Try
      • Q(K);CHECK
      • Vars
        • K(h);N_SPINR(d),OGATE,S_FLIGHT,XS(G)::QAR1(K),XS(g)
      • Refutation
        • K(h);S_FLIGHT
    • Try
      • Q(K);CHECK
      • Vars
        • K(h);N_SPINR(d),OGATE,S_FLIGHT,XS(G)::QAR1(K),XS(g)
      • Refutation
        • K(h);S_FLIGHT
  • Actual
    • Q(K);
    • Vars
      • K(h);N_SPINR(d),P_SPINS(g),S_FLIGHT,XS(G)::QAR1(K),XS(g)
      • K(h);N_SPINR(d),P_SPINP(j),S_FLIGHT::QAB(K)
      • B(f);N_GUARD,P_SPINS(g),SBLOCK,XS(G)::QAR2(K),XP(j)
      • S(g);N_GUARD,P_SPINB(f),SBLOCK::R(J),XP(j)
      • B(f);P_SPINS(g),SBLOCK::QAB(K)
      • S(g);P_SPINB(f)::S(D),XP(e)
      • P(j);SBLOCK::S(G)
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