MESON Chess Problem Database
Problem Display
PID: 17661 (2Q5/2Knp3/p1nNBb2/r1kr2qR/pp2b3/3p4/2N5/B1R5 w - - 0 1)
Hassberg, Eric Manfred
1st Prize, Parallele 50, 1948
#2
8 + 13
SOLUTION
- SOUND
- Sets
- 1...Qh4
- 2.Sd4#
- 1...Qg3
- 2.Sd4#
- 1...Qg4
- 2.Sd4#
- 1...Qe5
- 2.Sd4#
- 1...Qf5
- 2.Sd4#
- 1...Qxh5
- 2.Sd4#
- 1...Qg6
- 2.Sd4#
- 1...Qg7
- 2.Sd4#
- 1...Qg8
- 2.Sd4#
- 1...Rd4
- 2.Sxd4#
- 1...Re5
- 2.Se3#
- 1...Rxd6
- 2.Sd4#
- 1...Qh4
- Tries
- 1.Sa3+?
- 1...Qxc1
- 2.Sxe4#
- 2.Sb7#
- 1...Bc3!
- 1...Qxc1
- 1.Qxa6?
- threat
- 2.Sxe4#
- 2.Sb7#
- 2.Qc4#
- 2.Qxc6#
- 1...Rxd6
- 2.Sd4#
- 2.Qc4#
- 1...exd6
- 2.Qxc6#
- 1...Qe3
- 2.Sb7#
- 2.Qc4#
- 2.Qxc6#
- 1...Qf4
- 2.Qc4#
- 2.Qxc6#
- 1...Qh4
- 2.Sd4#
- 2.Sb7#
- 2.Qc4#
- 2.Qxc6#
- 1...Qg2
- 2.Sb7#
- 2.Qc4#
- 2.Qxc6#
- 1...Qg3
- 2.Sd4#
- 2.Qc4#
- 2.Qxc6#
- 1...Qg4
- 2.Sd4#
- 2.Sb7#
- 2.Qc4#
- 2.Qxc6#
- 1...Qe5
- 2.Sd4#
- 2.Qc4#
- 2.Qxc6#
- 1...Qf5
- 2.Sd4#
- 2.Sb7#
- 2.Qc4#
- 2.Qxc6#
- 1...Qg6
- 2.Sd4#
- 2.Sb7#
- 2.Qc4#
- 2.Qxc6#
- 1...Rb5
- 2.Qxb5#
- 2.Qxc6#
- 1...Rd4
- 2.Sxd4#
- 2.Sb7#
- 1...Re5
- 2.Se3#
- 2.Sb7#
- 2.Qc4#
- 1...Rf5
- 2.Sxe4#
- 2.Sb7#
- 2.Qc4#
- 1...Bh1
- 2.Sb7#
- 2.Qc4#
- 2.Qxc6#
- 1...Bg2
- 2.Sb7#
- 2.Qc4#
- 2.Qxc6#
- 1...Bf3
- 2.Sb7#
- 2.Qc4#
- 2.Qxc6#
- 1...Bf5
- 2.Sb7#
- 2.Qc4#
- 2.Qxc6#
- 1...Bg6
- 2.Sb7#
- 2.Qc4#
- 2.Qxc6#
- 1...Bh7
- 2.Sb7#
- 2.Qc4#
- 2.Qxc6#
- 1...Be5
- 2.Qc4#
- 2.Qxc6#
- 1...Sd4
- 2.Sxe4#
- 2.Sb7#
- 2.Qc4#
- 1...Sce5
- 2.Sxe4#
- 2.Sb7#
- 2.Qxa5#
- 1...Sa7
- 2.Sxe4#
- 2.Sb7#
- 2.Qc4#
- 1...Scb8
- 2.Sxe4#
- 2.Sb7#
- 2.Qc4#
- 2.Qxa5#
- 1...Sd8
- 2.Sxe4#
- 2.Qc4#
- 2.Qxa5#
- 1...Sde5
- 2.Sxe4#
- 2.Sb7#
- 2.Qb6#
- 1...Sb6
- 2.Sxe4#
- 2.Sb7#
- 2.Qxb6#
- 1...Sdb8
- 2.Sxe4#
- 2.Sb7#
- 2.Qc4#
- 2.Qb6#
- 1...Rxa6!
- threat
- 1.Sa3+?
- Keys
- 1.Qb7!
- threat
- 2.Qxc6#
- 1...Rxd6
- 2.Sd4#
- 1...Rd4
- 2.Sxd4#
- 1...Re5
- 2.Se3#
- 1...Rf5
- 2.Sxe4#
- 1...Sd4
- 2.Qxb4#
- 1...Sce5
- 2.Qxb4#
- 1...Sa7
- 2.Qxb4#
- 1...Scb8
- 2.Qxb4#
- 1...Sd8
- 2.Qxb4#
- 1...Sde5
- 2.Qb6#
- 1...Sdb8
- 2.Qb6#
- threat
- 1.Qb7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 9
- Sets
- Q(h);N_GUARD,P_SPINR(g)::R(B)+S(C)
- Q(h);N_GUARD,P_PINS(E),P_SPINR(g)::R(B)+S(C)
- Q(h);N_GUARD,P_PINS(E)::R(B)+S(C)
- Q(h);N_GUARD::R(B)+S(C)
- Q(h);N_GUARD,XR(D)::R(B)+S(C)
- R(g);P_SPINQ(h)::R(B)+S(C),XR(g)
- R(g);S_CUTB(k)::R(B)+S(C)
- R(g);P_SPINQ(h),XS(E)::R(B)+S(C)
- Tries
- Try
- S(C);CHECK
- Refutation
- B(k);P_SPINB(k)
- Try
- Q(H);XP(i)
- Threat
- DUALS(4)
- Vars
- P(m);XS(E)::QAR1(H),XS(j)
- Refutation
- R(e);XQ(H)
- Try
- Actual
- Q(H);
- Threat
- QAR1(H),XS(j)
- Vars
- R(g);P_SPINQ(h),XS(E)::R(B)+S(C)
- R(g);P_SPINQ(h)::R(B)+S(C),XR(g)
- R(g);S_CUTB(k)::R(B)+S(C)
- R(g);::S(E),XB(d)
- S(j);N_GUARD::QAB1(H),XP(c)
- S(l);N_GUARD::QAB1(H)
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).