MESON Chess Problem Database
Problem Display
PID: 100991 (4R2B/3bNp2/2Pp1n2/q1p1k3/rr3N2/3pnQ2/3P4/b3R2K w - - 0 1)
Hartong, Jan
Good Companions, 1921
#2
9 + 12
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rxf4
- 2.Qd5#
- 1...c4
- 2.Qxe3#
- 1...Rxf4
- Tries
- 1.Sg2?
- threat
- 2.Qd5#
- 1...Kd4
- 2.Qf4#
- 1...Ke6
- 2.Qf5#
- 1...Bxc6
- 2.Sxc6#
- 1...d5
- 2.Qxd5#
- 1...Rd4
- 2.Sg6#
- 1...Re4
- 2.Qxf6#
- 1...Be6
- 2.Bxf6#
- 1...c4
- 2.Qxe3#
- 1...Rh4+!
- threat
- 1.Sxd3+?
- 1...Ke6
- 2.Qf5#
- 1...Kd4!
- 1...Ke6
- 1.Sh5?
- threat
- 2.Qd5#
- 1...Kd4
- 2.Qf4#
- 1...Ke6
- 2.Qf5#
- 1...Bxc6
- 2.Sxc6#
- 1...d5
- 2.Qxd5#
- 1...Rd4
- 2.Sg6#
- 1...Re4
- 2.Qxf6#
- 1...Be6
- 2.Bxf6#
- 1...c4
- 2.Qxe3#
- 1...Rh4+!
- threat
- 1.Se6?
- threat
- 2.Qd5#
- 2.Qf5#
- 1...Kxe6
- 2.Qf5#
- 1...Bxc6
- 2.Sxc6#
- 1...Bxe6
- 2.Bxf6#
- 1...fxe6
- 2.Bxf6#
- 1...d5
- 2.Qxd5#
- 1...Rd4
- 2.Qf5#
- 1...Re4
- 2.Qxf6#
- 1...Rf4
- 2.Qd5#
- 1...c4
- 2.Rxe3#
- 2.Qxe3#
- 2.Qf5#
- 1...Rh4+!
- threat
- 1.Sfg6+?
- 1...Kd4
- 2.Qf4#
- 1...Ke6
- 2.Qf5#
- 1...fxg6!
- 1...Kd4
- 1.Seg6+?
- 1...Kd4
- 2.Re4#
- 2.Qe4#
- 1...Kf5!
- 1...Kd4
- 1.Rxe3+?
- 1...Kd4
- 2.Re4#
- 2.Qe4#
- 2.Qd5#
- 1...Re4!
- 1...Kd4
- 1.Sg2?
- Keys
- 1.Sh3!
- threat
- 2.Qd5#
- 1...Kd4
- 2.Qf4#
- 1...Ke6
- 2.Qf5#
- 1...Bxh3
- 2.Sf5#
- 1...Bxc6
- 2.Sxc6#
- 1...d5
- 2.Qxd5#
- 1...Rd4
- 2.Sg6#
- 1...Re4
- 2.Qxf6#
- 1...Be6
- 2.Bxf6#
- 1...c4
- 2.Qxe3#
- threat
- 1.Sh3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 1
- Sets
- R(e);SBLOCK,XS(E)::QAR1(D)
- P(g);S_CUTR(e)::QAR2(D),XS(c)
- Tries
- Try
- S(E);
- Threat
- QAR1(D)
- Vars
- K(h);N_SPINS(c),P_SPINS(j),S_FLIGHT::QAR2(D)
- K(h);P-FLIGHT::QAB1(D)
- B(k);XP(F)::R(H)+S(G),DCHECK,XB(k)
- P(i);::QAR1(D),XP(i)
- R(e);SBLOCK::R(H)+S(G),DCHECK
- R(e);N_SPINS(c),P_SPINS(j),SBLOCK::QAB1(D),XS(j)
- B(k);SBLOCK::B(I),XS(j)
- P(g);S_CUTR(e)::QAR2(D),XS(c)
- Refutation
- R(e);CHECK
- Try
- S(E);CHECK,XP(b)
- Vars
- K(h);P-FLIGHT::QAB1(D)
- Refutation
- K(h);N_SPINS(c),P_SPINS(j),S_FLIGHT
- Try
- S(E);
- Threat
- QAR1(D)
- Vars
- K(h);N_SPINS(c),P_SPINS(j),S_FLIGHT::QAR2(D)
- K(h);P-FLIGHT::QAB1(D)
- B(k);P_PINQ(D),XP(F)::R(H)+S(G),DCHECK,XB(k)
- P(i);::QAR1(D),XP(i)
- R(e);SBLOCK::R(H)+S(G),DCHECK
- R(e);N_SPINS(c),P_SPINS(j),SBLOCK::QAB1(D),XS(j)
- B(k);SBLOCK::B(I),XS(j)
- P(g);S_CUTR(e)::QAR2(D),XS(c)
- Refutation
- R(e);CHECK
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- K(h);P-FLIGHT,XS(E)::QAB1(D)
- B(k);P_PINQ(D),XP(F)::S(G),XB(k)
- B(k);SBLOCK,XS(E)::B(I),XS(j)
- P(l);SBLOCK,XS(E)::B(I),XS(j)
- P(i);::QAR1(D),XP(i)
- R(e);::QAR1(D)
- R(e);N_SPINS(c),P_SPINS(j),SBLOCK::QAB1(D),XS(j)
- Refutation
- R(e);CHECK
- Try
- S(E);CHECK
- Vars
- K(h);N_SPINS(c),P_SPINS(j),S_FLIGHT::QAR2(D)
- K(h);P-FLIGHT::QAB1(D)
- Refutation
- P(l);XS(E)
- Try
- S(G);CHECK
- Refutation
- K(h);N_SPINS(c),P-FLIGHT
- Try
- R(A);CHECK,P_PINS(j),XS(c)
- Refutation
- R(e);P_SPINR(e)
- Try
- Actual
- S(E);
- Threat
- QAR1(D)
- Vars
- K(h);N_SPINS(c),P_SPINS(j),S_FLIGHT::QAR2(D)
- K(h);P-FLIGHT::QAB1(D)
- B(k);N_GUARD,XS(E)::R(H)+S(G)
- B(k);P_PINQ(D),XP(F)::R(H)+S(G),DCHECK,XB(k)
- P(i);::QAR1(D),XP(i)
- R(e);SBLOCK::R(H)+S(G),DCHECK
- R(e);N_SPINS(c),P_SPINS(j),SBLOCK::QAB1(D),XS(j)
- B(k);SBLOCK::B(I),XS(j)
- P(g);S_CUTR(e)::QAR2(D),XS(c)
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).