MESON Chess Problem Database
Problem Display
PID: 141282 (2K1Bn2/2Q3B1/N3k3/5Nn1/1p2P3/2q3r1/1b6/8 w - - 0 1)
Bouma, Gerhard Johan
2. International Team (Friendship) Match, 1967-1970
#2
7 + 7
| 702 | Phenix | 1989 |
| 721 | Variantim | 1989 |
SOLUTION
- SOUND
- Sets
- 1...Qe1
- 2.Sc5#
- 2.Qb6#
- 2.Qd6#
- 2.Qc4#
- 2.Qc6#
- 2.Qe7#
- 1...Qd2
- 2.Sc5#
- 2.Qe7#
- 1...Qd4
- 2.Qe7#
- 1...Qe5
- 2.Qe7#
- 1...Qf6
- 2.Sc5#
- 2.Qd6#
- 1...Qxg7
- 2.Qd6#
- 1...Qa3
- 2.Sc5#
- 2.Qb6#
- 2.Qd6#
- 2.Qc4#
- 2.Qc6#
- 2.Qe7#
- 1...Qb3
- 2.Sc5#
- 2.Qb6#
- 2.Qd6#
- 2.Qc6#
- 2.Qe7#
- 1...Qd3
- 2.Sc5#
- 2.Qe7#
- 1...Qe3
- 2.Qd6#
- 2.Qc4#
- 2.Qc6#
- 2.Qe7#
- 1...Qf3
- 2.Sc5#
- 2.Qb6#
- 2.Qd6#
- 2.Qc4#
- 2.Qc6#
- 2.Qe7#
- 1...Qc4
- 2.Qxc4#
- 1...Qc5
- 2.Sxc5#
- 1...Qc6
- 2.Qxc6#
- 1...Qxc7+
- 2.Sxc7#
- 1...Sf3
- 2.Bf7#
- 1...Sh3
- 2.Bf7#
- 1...Sf7
- 2.Bxf7#
- 1...Sgh7
- 2.Bf7#
- 1...Qe1
- Tries
- 1.Kb7?
- threat
- 2.Qd6#
- 2.Qe7#
- 1...Qc6+
- 2.Qxc6#
- 1...Qxc7+
- 2.Sxc7#
- 1...Sxe4
- 2.Qf7#
- 1...Qd2
- 2.Sc5#
- 2.Qe7#
- 1...Qd4
- 2.Qe7#
- 1...Qe5
- 2.Qe7#
- 1...Qf6
- 2.Sc5#
- 2.Qd6#
- 1...Qd3
- 2.Sc5#
- 2.Qe7#
- 1...Qc5
- 2.Sxc5#
- 1...Rd3
- 2.Qe7#
- 1...Sf7
- 2.Bxf7#
- 2.Qe7#
- 2.Qxf7#
- 1...Sg6
- 2.Qd6#
- 2.Qd7#
- 1...Sd7
- 2.Qd6#
- 2.Qxd7#
- 1...Qxg7!
- threat
- 1.Kb8?
- threat
- 2.Qd6#
- 2.Qe7#
- 1...Qxc7+
- 2.Sxc7#
- 1...Sd7+
- 2.Qxd7#
- 1...Qxg7
- 2.Qd6#
- 1...Sxe4
- 2.Qf7#
- 1...Qd2
- 2.Sc5#
- 2.Qe7#
- 1...Qd4
- 2.Qe7#
- 1...Qf6
- 2.Sc5#
- 2.Qd6#
- 1...Qd3
- 2.Sc5#
- 2.Qe7#
- 1...Qc5
- 2.Sxc5#
- 1...Qc6
- 2.Qxc6#
- 2.Qe7#
- 1...Rd3
- 2.Qe7#
- 1...Sf7
- 2.Bxf7#
- 2.Qe7#
- 2.Qxf7#
- 1...Sg6
- 2.Qd6#
- 2.Qd7#
- 1...Qe5!
- threat
- 1.Bxc3?
- threat
- 2.Sg7#
- 2.Sc5#
- 2.Qe5#
- 2.Qb6#
- 2.Qd6#
- 2.Qc4#
- 2.Qc6#
- 2.Qe7#
- 1...Bxc3
- 2.Qd6#
- 2.Qe7#
- 1...Sxe4
- 2.Qe5#
- 2.Qf7#
- 1...bxc3
- 2.Qd6#
- 2.Qe7#
- 1...Rd3
- 2.Sg7#
- 2.Sc5#
- 2.Qe5#
- 2.Qe7#
- 1...Sf3
- 2.Sc5#
- 2.Bf7#
- 2.Qb6#
- 2.Qd6#
- 2.Qc4#
- 2.Qc6#
- 2.Qe7#
- 2.Qf7#
- 1...Sh3
- 2.Sc5#
- 2.Bf7#
- 2.Qe5#
- 2.Qb6#
- 2.Qd6#
- 2.Qc4#
- 2.Qc6#
- 2.Qe7#
- 2.Qf7#
- 1...Sf7
- 2.Sc5#
- 2.Bxf7#
- 2.Qc4#
- 2.Qe7#
- 2.Qxf7#
- 1...Sgh7
- 2.Sc5#
- 2.Bf7#
- 2.Qe5#
- 2.Qb6#
- 2.Qd6#
- 2.Qc4#
- 2.Qc6#
- 2.Qe7#
- 2.Qf7#
- 1...Sg6
- 2.Sg7#
- 2.Sc5#
- 2.Qb6#
- 2.Qd6#
- 2.Qc4#
- 2.Qc6#
- 2.Qd7#
- 1...Sd7
- 2.Qd6#
- 2.Qc4#
- 2.Qc6#
- 2.Qxd7#
- 1...Rxc3!
- threat
- 1.Kb7?
- Keys
- 1.Qc5!
- threat
- 2.Sc7#
- 1...Qxc5+
- 2.Sxc5#
- 1...Qxg7
- 2.Qd6#
- 1...Qe5
- 2.Qe7#
- threat
- 1.Qc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 8
- Sets
- Q(b);N_PINQ(D)::QAR1(D)
- Q(b);N_PINQ(D),XB(E)::QAR1(D)
- Q(b);N_GUARD::QAB(D),XQ(b)
- Q(b);N_GUARD::S(C),XQ(b)
- Q(b);N_GUARD::QAR2(D),XQ(b)
- Q(b);CHECK,XQ(D)::S(C),XQ(b)
- S(e);N_GUARD::B(G)
- S(e);N_GUARD::B(G),XS(e)
- Tries
- Try
- K(F);N_SPINQ(D),S_FLIGHT
- Threat
- DUALS(2)
- Vars
- Q(b);CHECK,N_GUARD::QAR2(D),XQ(b)
- Q(b);CHECK,XQ(D)::S(C),XQ(b)
- S(e);N_GUARD,XP(A)::QAB1(D)
- Q(b);::QAR1(D)
- Q(b);N_GUARD::S(C),XQ(b)
- R(c);::QAR1(D)
- Refutation
- Q(b);P_PINQ(D),XB(E)
- Try
- K(F);N_SPINQ(D),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- Q(b);CHECK,XQ(D)::S(C),XQ(b)
- S(g);CHECK,N_GUARD::QAB1(D),XS(g)
- Q(b);XB(E)::QAR1(D)
- S(e);N_GUARD,XP(A)::QAB1(D)
- Q(b);::QAR1(D)
- Q(b);N_GUARD::S(C),XQ(b)
- R(c);::QAR1(D)
- Refutation
- Q(b);P_PINQ(D)
- Try
- B(E);N_SPINQ(D),XQ(b)
- Threat
- DUALS(8)
- Refutation
- R(c);P_PINQ(D),XB(E)
- Try
- Actual
- Q(D);
- Threat
- S(C)
- Vars
- Q(b);CHECK,XQ(D)::S(C),XQ(b)
- Q(b);N_PINQ(D),XB(E)::QAR1(D)
- Q(b);N_PINQ(D)::QAR1(D)
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).