MESON Chess Problem Database

Problem Display
PID: 17365 (3R4/BrN3K1/1PP2P1N/3nb1Qp/1P1k1pbR/1q1B1p2/3PP3/6r1 w - - 0 1)

Hassberg, Eric Manfred

2nd Prize, Four Way Pin Ty., 1946

3R4/BrN3K1/1PP2P1N/3nb1Qp/1P1k1pbR/1q1B1p2/3PP3/6r1

#2

14 + 10

14773 The Best American Chess Problems of 1946 1948

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Rxd5#
    • 1...Qc2
      • 2.Rxd5#
    • 1...Qa4
      • 2.Rxd5#
    • 1...Qb1
      • 2.Rxd5#
    • 1...Qb2
      • 2.Rxd5#
    • 1...Qa3
      • 2.Rxd5#
    • 1...Qc3
      • 2.Rxd5#
    • 1...Qxb4
      • 2.Rxd5#
    • 1...Rxb6
      • 2.Sb5#
      • 2.Bxb6#
    • 1...Rxc7+
      • 2.bxc7#
    • 1...Rb8
      • 2.Sb5#
      • 2.b7#
    • 1...Bf5
      • 2.Sxf5#
    • 1...Bd7
      • 2.Sb5#
    • 1...Bxf6+
      • 2.Qxf6#
  • Tries
    • 1.e3+?
      • 1...fxe3
        • 2.Qxe3#
      • 1...Kxd3!
  • Keys
    • 1.Qg6!
      • threat
        • 2.Qe4#
      • 1...Rxc7+
        • 2.bxc7#
      • 1...Bxf6+
        • 2.Qxf6#
      • 1...Qxd3
        • 2.Qxd3#
      • 1...Qxb4
        • 2.Rxd5#
      • 1...Bh3
        • 2.e3#
      • 1...Bf5
        • 2.Sxf5#
      • 1...Be6
        • 2.e3#
      • 1...Bd7
        • 2.Sb5#
      • 1...Bc8
        • 2.e3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • Q(b);N_GUARD::R1(N),XS(g)
    • Q(b);N_GUARD,XP(D)::R1(N),XS(g)
    • R(j);CHECK,OGATE,XS(L)::B(K)+P(G),XR(j)
    • B(f);N_GUARD,P_PINQ(F),P_SPINP(e)::S(J),XB(f)
    • B(f);N_PINS(L),N_SPINS(g),P_PINQ(F),P_SPINP(e)::S(L)
    • B(h);CHECK,OGATE,XP(I)::QAB(F),XB(h)
  • Tries
    • Try
      • P(B);CHECK
      • Vars
        • P(e);OGATE,P_SPINB(f),XP(B)::QAB1(F),XP(e)
      • Refutation
        • K(d);P-FLIGHT,XB(C)
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • R(j);CHECK,OGATE,XS(L)::B(K)+P(G),XR(j)
      • B(h);CHECK,OGATE,XP(I)::QAB(F),XB(h)
      • Q(b);OGATE,XB(C)::QAR1(F),XQ(b)
      • Q(b);N_GUARD,XP(D)::R1(N),XS(g)
      • B(f);P_PINQ(F),P_SPINP(e)::P(B)
      • B(f);N_GUARD,P_PINQ(F),P_SPINP(e)::S(J),XB(f)
      • B(f);N_PINS(L),N_SPINS(g),P_PINQ(F),P_SPINP(e)::S(L)
HTML5 logo

Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).