MESON Chess Problem Database
Problem Display
PID: 242686 (2NQ4/2pP1P2/5Kp1/3knnRr/BP3Rb1/2Pp4/3Nq3/b4r2 w - - 0 1)
Hartong, Jan
L'Italia Scacchistica, 1951
#2
11 + 11
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sc4
- 2.Rd4#
- 1...Sc6
- 2.Bb3#
- 1...Sxd7+
- 2.Qxd7#
- 1...Sxf7
- 2.Rd4#
- 1...Sg3
- 2.c4#
- 1...Sd4
- 2.c4#
- 1...Sh4
- 2.c4#
- 1...Sd6
- 2.Se7#
- 1...Sh6
- 2.c4#
- 1...Se7
- 2.c4#
- 1...Sg7
- 2.c4#
- 1...Sc4
- Tries
- 1.Qxc7?
- threat
- 2.Sb6#
- 2.Qa5#
- 2.Qc5#
- 1...Sxd7+
- 2.Qxd7#
- 1...Qf2
- 2.Qxe5#
- 1...Sc4
- 2.Bc6#
- 2.Rd4#
- 2.Qxc4#
- 2.Qc5#
- 2.Qc6#
- 2.Qb7#
- 1...Sc6
- 2.Sb6#
- 2.Bb3#
- 2.Bxc6#
- 2.Qd6#
- 2.Qxc6#
- 1...Sd4
- 2.Sb6#
- 2.Se7#
- 2.Qd6#
- 2.Qc4#
- 2.Qc5#
- 2.c4#
- 1...Sd6
- 2.Sb6#
- 2.Se7#
- 2.Bc6#
- 2.Qxd6#
- 2.Qc5#
- 2.Qc6#
- 1...Qe3!
- threat
- 1.Qe7?
- threat
- 2.Qc5#
- 2.Qe6#
- 1...Sxd7+
- 2.Qxd7#
- 1...Sxf7
- 2.Rd4#
- 2.Qc5#
- 1...Sxe7
- 2.c4#
- 1...Qf2
- 2.Qxe5#
- 2.Qe6#
- 1...Qe3
- 2.Qe6#
- 1...Sf3
- 2.Qc5#
- 2.d8Q#
- 2.d8R#
- 1...Sc4
- 2.Rd4#
- 2.Qc5#
- 1...Sc6
- 2.Bb3#
- 2.Qc5#
- 1...Se3
- 2.Qc5#
- 2.Qxe5#
- 1...Sg3
- 2.Qc5#
- 2.c4#
- 1...Sd4
- 2.Qc5#
- 2.c4#
- 1...Sh4
- 2.Qc5#
- 2.c4#
- 1...Sh6
- 2.Qc5#
- 2.c4#
- 1...Sg7
- 2.Qc5#
- 2.c4#
- 1...c5
- 2.Sb6#
- 2.Qxc5#
- 2.Qe6#
- 1...Sd6!
- threat
- 1.Qxc7?
- Keys
- 1.Qe8!
- threat
- 2.Qe6#
- 1...Sxd7+
- 2.Qxd7#
- 1...Sxf7
- 2.Rd4#
- 1...Sf3
- 2.d8Q#
- 2.d8R#
- 1...Sc4
- 2.Rd4#
- 1...Sc6
- 2.Bb3#
- 1...Se3
- 2.Qxe5#
- 1...Sg3
- 2.c4#
- 1...Sd4
- 2.c4#
- 1...Sh4
- 2.c4#
- 1...Sd6
- 2.Se7#
- 1...Sh6
- 2.c4#
- 1...Se7
- 2.c4#
- 1...Sg7
- 2.c4#
- threat
- 1.Qe8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- S(g);P_PINP(B),P_SPINS(h)::R1(E)
- S(g);N_GUARD,P_PINP(B),P_SPINS(h),SBLOCK::B(C)
- S(g);CHECK,OGATE,P_PINP(B),P_SPINS(h),XP(H)::QAR2(K),XS(g)
- S(g);P_PINP(B),P_SPINS(h),XP(I)::R1(E)
- S(h);P_PINR(E),P_SPINS(g)::P(B)
- S(h);N_GUARD,P_PINR(E),P_SPINS(g),SBLOCK::S(J)
- Tries
- Try
- Q(K);XP(k)
- Threat
- DUALS(3)
- Vars
- S(g);CHECK,OGATE,P_PINP(B),P_SPINS(h),XP(H)::QAR2(K),XS(g)
- Q(c);N_GUARD::QAR1(K),XS(g)
- Refutation
- Q(c);
- Try
- Q(K);
- Threat
- DUALS(2)
- Vars
- S(g);CHECK,OGATE,P_PINP(B),P_SPINS(h),XP(H)::QAR2(K),XS(g)
- S(h);P_PINR(E),P_SPINS(g),XQ(K)::P(B)
- Q(c);::QAB1(K)
- Refutation
- S(h);P_PINR(E),P_SPINS(g)
- Try
- Actual
- Q(K);
- Threat
- QAB1(K)
- Vars
- S(g);CHECK,OGATE,P_PINP(B),P_SPINS(h),XP(H)::QAR2(K),XS(g)
- S(g);P_PINP(B),P_SPINS(h),XP(I)::R1(E)
- S(g);N_GUARD,P_PINP(B),P_SPINS(h)::P=Q
- S(g);P_PINP(B),P_SPINS(h)::R1(E)
- S(g);N_GUARD,P_PINP(B),P_SPINS(h),SBLOCK::B(C)
- S(h);P_PINR(E),P_SPINS(g),S_CUTQ(c)::QAR1(K),XS(g)
- S(h);P_PINR(E),P_SPINS(g)::P(B)
- S(h);N_GUARD,P_PINR(E),P_SPINS(g),SBLOCK::S(J)
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).