MESON Chess Problem Database

Problem Display
PID: 55628 (8/p2p4/Q3b3/R1Nkp1Rr/5P1p/1Pq2p2/B1r1p1NK/B7 w - - 0 1)

Howard, Kenneth Samuel

American Chess Bulletin, 1940

8/p2p4/Q3b3/R1Nkp1Rr/5P1p/1Pq2p2/B1r1p1NK/B7

#2

10 + 11

5089 The Enjoyment of Chess Problems 1943

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qd3#
    • 1...Qe1
      • 2.Se3#
    • 1...Qb4
      • 2.Se3#
    • 1...Qxb3
      • 2.Se3#
    • 1...Qe3
      • 2.Sxe3#
    • 1...Qc4
      • 2.Se3#
  • Tries
    • 1.Se3+?
      • 1...Kd4
        • 2.Qd3#
      • 1...Qxe3!
    • 1.Qb7+?
      • 1...Kd4
        • 2.Qe4#
      • 1...Kd6!
    • 1.Qxe6+?
      • 1...Kd4
        • 2.Qc4#
        • 2.Qxd7#
        • 2.Qxe5#
        • 2.Qd6#
      • 1...dxe6!
    • 1.b4+?
      • 1...Kd4
        • 2.Qd3#
      • 1...Qb3
        • 2.Se3#
      • 1...Qc4
        • 2.Se3#
      • 1...Rxa2!
  • Keys
    • 1.fxe5!
      • threat
        • 2.Qd6#
      • 1...Qxe5+
        • 2.Sf4#
      • 1...Kd4
        • 2.Qd3#
      • 1...Qxb3
        • 2.Se3#
        • 2.Sf4#
      • 1...Qxc5
        • 2.Qb7#
      • 1...d6
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • K(f);N_SPINP(g),P-FLIGHT,P_SPINQ(c)::QAR1(J)
    • Q(c);N_GUARD::S(C)
    • Q(c);N_GUARD,P_SPINQ(c),XP(E)::S(C)
    • Q(c);N_GUARD::S(C),XQ(c)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(f);N_SPINP(g),P-FLIGHT,P_SPINQ(c)::QAR1(J)
      • Refutation
        • Q(c);XS(C)
    • Try
      • Q(J);CHECK
      • Vars
        • K(f);N_SPINP(g),OGATE,P-FLIGHT,P_SPINQ(c)::QAR1(J)
      • Refutation
        • K(f);N_SPINP(g),P-FLIGHT
    • Try
      • Q(J);CHECK,XB(i)
      • Refutation
        • P(k);XQ(J)
    • Try
      • P(E);CHECK
      • Vars
        • K(f);N_SPINP(g),P-FLIGHT,P_SPINQ(c)::QAR1(J)
        • Q(c);P_SPINQ(c)::S(C)
      • Refutation
        • R(a);XB(B)
  • Actual
    • P(F);XP(g)
    • Threat
      • QAR1(J)
    • Vars
      • Q(c);CHECK,P_SPINQ(c),XP(F)::S(C)
      • K(f);P-FLIGHT,P_SPINQ(c)::QAR1(J)
      • Q(c);P_SPINQ(c),XS(H)::QAB(J)
      • P(k);::QAR1(J),XP(k)
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