MESON Chess Problem Database

Problem Display
PID: 21187 (1B4n1/7N/K1pN4/5P2/R1n2k2/2P1R2P/4b1B1/2Q5 w - - 0 1)

Mansfield, Comins

1st Prize, Good Companions (March), 1917

1B4n1/7N/K1pN4/5P2/R1n2k2/2P1R2P/4b1B1/2Q5

#2

11 + 5

3132 The Good Companion Two-Mover 1922
3360 Simple Two-move Themes 1924
56 The Problemist 1929
887 Mate in Two Moves 1931
4797 A Genius of the Two-mover 1936
461 Schach-Express 1948
70 American Chess Problemist 1950
3174 The Two-move Chess Problem Tradition and Development 1966
3098 FIDE Album (1914-1944) (I) 1971
274 diagrammes 1974
117 Suomen Shakki 1984
2048 Tuxens skakopgaver (Leif C Schmidt) 1984
3364 Solving in Style 1985
17120 Tehtavashakin kasikirja (Kallio) 1995
3202 Complete Mansfield/I 1996
6455 The Chessboard Adventures of Norman Macleod 1996
4054 Complete Mansfield/III 1999
133 The Problemist Supplement 2007
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Rxc4#
    • 1...Bg4
      • 2.Rxc4#
    • 1...Bh5
      • 2.Rxc4#
  • Tries
    • 1.Qe1?
      • threat
        • 2.Re4#
        • 2.Qg3#
      • 1...Bd3
        • 2.Rf3#
        • 2.Qf2#
        • 2.Qg3#
      • 1...Bf3
        • 2.Rxf3#
      • 1...Sf6
        • 2.Qg3#
      • 1...Kxe3!
    • 1.Qc2?
      • threat
        • 2.Sxc4#
        • 2.Qe4#
      • 1...Bf3
        • 2.Sxc4#
      • 1...Bd3
        • 2.Qf2#
      • 1...Sf6
        • 2.Sxc4#
      • 1...Kxe3!
  • Keys
    • 1.Be4!
      • threat
        • 2.Sxc4#
      • 1...Sb2+
        • 2.Sc4#
        • 2.Sb5#
      • 1...Sd2+
        • 2.Sc4#
      • 1...Sa3+
        • 2.Sc4#
        • 2.Sb5#
      • 1...Sxe3+
        • 2.Sb5#
      • 1...Sa5+
        • 2.Sc4#
        • 2.Sb5#
      • 1...Se5+
        • 2.Rd3#
      • 1...Sb6+
        • 2.Sc4#
        • 2.Sb5#
      • 1...Sxd6+
        • 2.Bd3#
      • 1...Ke5
        • 2.Sxc4#
        • 2.Sf7#

This anticipates 184941(1939)

There are these versions: 74432

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • B(a);N_GUARD::R(F),XS(b)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);N_GUARD::R1(D),XB(a)
        • S(e);::QAB1(A)
      • Refutation
        • K(c);N_SPINS(b),P_SPINB(a),S_FLIGHT,XR(D)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::B(K)+S(I),XS(b)
        • B(a);OGATE::QAR2(A)
        • S(e);::B(K)+S(I),XS(b)
      • Refutation
        • K(c);N_SPINS(b),S_FLIGHT,XR(D)
  • Actual
    • B(B);N_PINS(b)
    • Threat
      • B(K)+S(I),XS(b)
    • Vars
      • S(b);CHECK::B(K)+S(I)
      • S(b);CHECK,N_GUARD,P_SPINS(b),XR(D)::B(K)+S(I)
      • S(b);CHECK,N_GUARD,SBLOCK::QAB(A)+R(D)
      • S(b);CHECK,OGATEB,P_SPINS(b),XS(I)::R(F)+B(B)
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