MESON Chess Problem Database
Problem Display
PID: 100892 (1q1NR3/8/QP1B4/2Pk1NR1/p6K/r6p/b1P1n3/bn2r3 w - - 0 1)
van Dijk, Johannes
Good Companions, 1919
#2
10 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rb3
- 2.c4#
- 1...Rc3
- 2.Re5#
- 1...Bd4
- 2.Se3#
- 1...Be5
- 2.Rxe5#
- 1...Sbc3
- 2.Re5#
- 1...Sec3
- 2.Qd3#
- 1...Sd4
- 2.Se3#
- 1...Rb3
- Tries
- 1.Qd3+?
- 1...Bd4
- 2.Se3#
- 2.Sg3#
- 2.Sxd4#
- 2.Sh6#
- 2.Se7#
- 2.Sg7#
- 2.Re5#
- 1...Sd4
- 2.Se3#
- 2.Se7#
- 1...Rxd3!
- 1...Bd4
- 1.Qxa4?
- threat
- 2.Se3#
- 2.Sd4#
- 2.Se7#
- 2.Qe4#
- 1...Qxd6
- 2.Se3#
- 2.Se7#
- 1...Qxd8
- 2.Se3#
- 2.Qe4#
- 1...Be5
- 2.Se7#
- 2.Rxe5#
- 1...Qc8
- 2.Se3#
- 2.Se7#
- 2.Qe4#
- 1...Rf1
- 2.Se3#
- 2.Se7#
- 2.Qe4#
- 1...Rg1
- 2.Se3#
- 2.Se7#
- 2.Qe4#
- 1...Re3
- 2.Sxe3#
- 2.Se7#
- 1...Rf3
- 2.Se3#
- 2.Se7#
- 2.Qe4#
- 1...Rg3
- 2.Se3#
- 2.Se7#
- 2.Qe4#
- 1...Bd4
- 2.Se3#
- 2.Sxd4#
- 1...Bf6
- 2.Se3#
- 2.Se7#
- 2.Qe4#
- 1...Bg7
- 2.Se3#
- 2.Se7#
- 2.Sxg7#
- 2.Qe4#
- 1...Bh8
- 2.Se3#
- 2.Se7#
- 2.Sg7#
- 2.Qe4#
- 1...Bc4
- 2.Qc6#
- 1...Sd2
- 2.Se3#
- 2.Sd4#
- 2.Se7#
- 1...Sbc3
- 2.Se3#
- 2.Sg3#
- 2.Sd4#
- 2.Sh6#
- 2.Se7#
- 2.Sg7#
- 2.Re5#
- 1...Sc1
- 2.Se3#
- 2.Se7#
- 1...Sg1
- 2.Se3#
- 2.Se7#
- 1...Sec3
- 2.Se3#
- 2.Se7#
- 2.Qd4#
- 1...Sg3
- 2.Se3#
- 2.Se7#
- 1...Sd4
- 2.Se3#
- 1...Sf4
- 2.Se3#
- 2.Se7#
- 1...Rxa4+!
- threat
- 1.Qd3+?
- Keys
- 1.Qb5!
- threat
- 2.c6#
- 1...Qxd6
- 2.cxd6#
- 1...Qxb6
- 2.cxb6#
- 1...Be5
- 2.Rxe5#
- 1...Rb3
- 2.c4#
- 1...Rc3
- 2.Re5#
- 1...Bd4
- 2.Se3#
- 1...Bc4
- 2.Qc6#
- 1...Sbc3
- 2.Re5#
- 1...Sec3
- 2.Qd3#
- 1...Sd4
- 2.Se3#
- threat
- 1.Qb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- R(f);S_CUTB(d)::P(A)
- R(f);S_CUTB(a)::R1(J)
- B(a);SBLOCK::R(E)+S(D),DCHECK
- B(a);N_GUARD::R1(J),XB(a)
- S(b);S_CUTB(a)::R1(J)
- S(e);N_GUARD,S_CUTB(a),S_CUTR(f)::QAR2(F)
- S(e);SBLOCK::R(E)+S(D),DCHECK
- Tries
- Try
- Q(F);CHECK
- Refutation
- R(f);XQ(F)
- Try
- Q(F);XP(h)
- Threat
- DUALS(4)
- Vars
- B(d);SBLOCK::QAB1(F)
- S(e);::R(E)+S(D),DCHECK
- Refutation
- R(f);CHECK,XQ(F)
- Try
- Actual
- Q(F);
- Threat
- QAR(F)+P(C)
- Vars
- Q(j);OGATE,XB(H)::QAR(F)+P(C),XQ(j)
- Q(j);OGATE,XP(G)::QAR(F)+P(C),XQ(j)
- B(a);N_GUARD::R1(J),XB(a)
- R(f);S_CUTB(d)::P(A)
- R(f);S_CUTB(a)::R1(J)
- B(a);SBLOCK::R(E)+S(D),DCHECK
- B(d);SBLOCK::QAB1(F)
- S(b);S_CUTB(a)::R1(J)
- S(e);N_GUARD,S_CUTB(a),S_CUTR(f)::QAR2(F)
- S(e);SBLOCK::R(E)+S(D),DCHECK
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).