MESON Chess Problem Database

Problem Display
PID: 56247 (6K1/p7/7R/r1n1k1B1/2p3RN/1nNp1p2/1Q3b1q/8 w - - 0 1)

Howard, Kenneth Samuel

3rd Prize, USA National Chess Federation 01. Ty., 1928

6K1/p7/7R/r1n1k1B1/2p3RN/1nNp1p2/1Q3b1q/8

#2

7 + 10

5089 The Enjoyment of Chess Problems 1943

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4
      • 2.Qxh2#
    • 1...Sa1
      • 2.Qb8#
    • 1...Sc1
      • 2.Qb8#
    • 1...Sd2
      • 2.Qb8#
    • 1...Sd4
      • 2.Qb8#
    • 1...Sa4
      • 2.Re4#
    • 1...Se4
      • 2.Rxe4#
    • 1...Sa6
      • 2.Re4#
    • 1...Sb7
      • 2.Re4#
    • 1...Sd7
      • 2.Re4#
  • Tries
    • 1.Bf4+?
      • 1...Kd4
        • 2.Sxf3#
        • 2.Sf5#
        • 2.Rd6#
      • 1...Qxf4!
  • Keys
    • 1.Rd4!
      • threat
        • 2.Rd5#
      • 1...Kxd4
        • 2.Sxf3#
      • 1...Bxd4
        • 2.Qxh2#
      • 1...Sxd4
        • 2.Qb8#
      • 1...Sa4
        • 2.Re4#
      • 1...Se4
        • 2.Rxe4#
      • 1...Sa6
        • 2.Re4#
      • 1...Se6
        • 2.Bf6#
      • 1...Sb7
        • 2.Re4#
      • 1...Sd7
        • 2.Re4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(a);OGATE::QAB(A),XQ(b)
    • S(c);OGATE::QAB(A)
    • S(h);N_GUARD::R1(C)
    • S(h);N_GUARD::R1(C),XS(h)
  • Tries
    • Try
      • B(E);CHECK
      • Refutation
        • Q(b);XB(E)
  • Actual
    • R(C);
    • Threat
      • R1(C)
    • Vars
      • K(i);S_FLIGHT,XR(C)::S(D),XP(e)
      • B(a);OGATE,SBLOCK,XR(C)::QAB(A),XQ(b)
      • S(c);OGATE,SBLOCK,XR(C)::QAB(A)
      • S(h);N_GUARD::R1(C)
      • S(h);N_GUARD::R1(C),XS(h)
      • S(h);SBLOCK::B(E)
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