MESON Chess Problem Database
Problem Display
PID: 31254 (8/P1K2p2/2nQ4/pp3pp1/B2Pkp2/1nR2p1r/4P3/b1BNN1q1 w - - 0 1)
Hirschenson, Aaron
22nd Place, 06. WCCT, 1998-2000
#2
10 + 13
| 3447 | 06. WCCT Award | 2001 |
SOLUTION
- SOUND
- Sets
- 1...Qf2
- 2.Sxf2#
- 1...Qh1
- 2.Sf2#
- 1...Qg4
- 2.Sf2#
- 1...Rh1
- 2.exf3#
- 1...Rh2
- 2.exf3#
- 1...Rh4
- 2.exf3#
- 1...Rh5
- 2.exf3#
- 1...Rh6
- 2.exf3#
- 1...Rh7
- 2.exf3#
- 1...Rh8
- 2.exf3#
- 1...Bxc3
- 2.Sxc3#
- 1...Sd2
- 2.Bc2#
- 1...Sb4
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sxa7
- 2.Qe5#
- 1...Se7
- 2.Qe5#
- 1...Sb8
- 2.Qe5#
- 1...Sd8
- 2.Qe5#
- 1...b4
- 2.Bxc6#
- 1...Qf2
- Tries
- 1.Sxf3?
- threat
- 2.Qxc6#
- 1...Qxd4
- 2.Sxg5#
- 1...Rxf3
- 2.exf3#
- 1...Sbxd4
- 2.Sd2#
- 1...Scxd4
- 2.Qe5#
- 1...Sxa7
- 2.Qe5#
- 1...Sb4
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Se7
- 2.Qe5#
- 1...Sb8
- 2.Qe5#
- 1...Sd8
- 2.Qe5#
- 1...Rh6!
- threat
- 1.Bxb3?
- threat
- 2.Bc2#
- 2.Qd5#
- 1...Sxd4
- 2.Bd5#
- 2.Qd5#
- 1...fxe2
- 2.Qd5#
- 1...Qe3
- 2.Qd5#
- 1...Sb4
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 2.Qd5#
- 1...Se7
- 2.Bc2#
- 2.Qe5#
- 1...f2
- 2.Qd5#
- 1...Qxd4!
- threat
- 1.Bxb5?
- threat
- 2.Bd3#
- 2.Bxc6#
- 1...Sxc1
- 2.Bxc6#
- 1...Sbxd4
- 2.Bd3#
- 1...Scxd4
- 2.Bd3#
- 1...Sxa7
- 2.Bd3#
- 2.Qe5#
- 1...fxe2
- 2.Bxc6#
- 1...Qe3
- 2.Bxc6#
- 1...Sc5
- 2.Bxc6#
- 1...Sb4
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Se7
- 2.Bd3#
- 2.Qe5#
- 1...Sb8
- 2.Bd3#
- 2.Qe5#
- 1...Sd8
- 2.Bd3#
- 2.Qe5#
- 1...f2
- 2.Bxc6#
- 1...Qxd4!
- threat
- 1.Qxf4+?
- 1...Kd5
- 2.Bxb3#
- 1...gxf4!
- 1...Kd5
- 1.Qe6+?
- 1...Kxd4
- 2.Sc2#
- 1...Se5
- 2.Qxe5#
- 1...fxe6!
- 1...Kxd4
- 1.Sxf3?
- Keys
- 1.Rc4!
- threat
- 2.Qxc6#
- 1...Qxd4
- 2.Sf2#
- 1...Bxd4
- 2.Sc3#
- 1...Sbxd4
- 2.Bc2#
- 1...Scxd4
- 2.a8Q#
- 2.a8B#
- 1...Sxa7
- 2.Qe5#
- 1...bxc4
- 2.Bxc6#
- 1...Rh6
- 2.exf3#
- 1...Sb4
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Se7
- 2.Qe5#
- 1...Sb8
- 2.Qe5#
- 1...Sd8
- 2.Qe5#
- threat
- 1.Rc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 12
- Sets
- Q(b);N_GUARD::S(B),XQ(b)
- Q(b);N_GUARD::S(B)
- R(e);N_GUARD::P(D),XP(d)
- B(a);XR(E)::S(B),XB(a)
- S(c);OGATE::B(F)
- S(l);N_GUARD::QAR1(H)
- S(l);N_GUARD::QAR1(H),XS(l)
- S(l);N_GUARD,XP(I)::QAR1(H)
- P(i);OGATE::B(F),XS(l)
- Tries
- Try
- S(C);XP(d)
- Threat
- QAB(H),XS(l)
- Vars
- Q(b);N_GUARD,XP(G)::S(C),XP(k)
- R(e);OGATE,XS(C)::P(D),XR(e)
- S(c);N_GUARD,XP(G)::S(C)
- S(l);N_GUARD,XP(G)::QAR1(H)
- S(l);N_GUARD,XP(I)::QAR1(H)
- S(l);N_GUARD::QAR1(H)
- S(l);N_GUARD::QAR1(H),XS(l)
- Refutation
- R(e);
- Try
- B(F);XS(c)
- Threat
- DUALS(2)
- Vars
- P(d);XP(D)::QAB1(H)
- Q(b);::QAB1(H)
- S(l);N_GUARD::QAR1(H)
- P(d);::QAB1(H)
- Refutation
- Q(b);XP(G)
- Try
- B(F);XP(i)
- Threat
- DUALS(2)
- Vars
- S(c);XB(A)::B(F),XS(l)
- S(c);XP(G)::B(F)
- S(l);XP(G)::B(F)
- P(d);XP(D)::B(F),XS(l)
- Q(b);::B(F),XS(l)
- S(c);::B(F),XS(l)
- S(l);N_GUARD::QAR1(H)
- S(l);N_GUARD::QAR1(H),XS(l)
- P(d);::B(F),XS(l)
- Refutation
- Q(b);XP(G)
- Try
- Q(H);CHECK,XP(g)
- Vars
- K(f);S_FLIGHT::B(F),XS(c)
- Refutation
- P(k);XQ(H)
- Try
- Q(H);CHECK
- Vars
- K(f);P-FLIGHT,XP(G)::S(C)
- S(l);N_GUARD,P_SPINS(l)::QAR1(H),XS(l)
- Refutation
- P(m);XQ(H)
- Try
- Actual
- R(E);
- Threat
- QAB(H),XS(l)
- Vars
- Q(b);N_GUARD,P_SPINQ(b),XP(G)::S(B)
- B(a);N_GUARD,P_SPINB(a),XP(G)::S(B)
- S(c);OGATE,P_SPINS(c),XP(G)::B(F)
- S(l);P_SPINS(l),XP(G)::P=Q
- S(l);N_GUARD,XP(I)::QAR1(H)
- P(i);OGATE,XR(E)::B(F),XS(l)
- R(e);N_GUARD::P(D),XP(d)
- S(l);N_GUARD::QAR1(H)
- S(l);N_GUARD::QAR1(H),XS(l)
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).