MESON Chess Problem Database
Problem Display
PID: 71380 (8/8/3p4/2pQ4/8/p1B1k1P1/R4nB1/1Kb3n1 w - - 0 1)
Bottacchi, Antonio
Niemeijer, Meindert
4th HM., Good Companions, 1920
#2
6 + 7
| 5454 | Near Snap | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Bb2
- 2.Qd2#
- 1...Bd2
- 2.Qxd2#
- 1...Se2
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Sgh3
- 2.Qf3#
- 1...Sd1
- 2.Qe4#
- 1...Sh1
- 2.Qe4#
- 1...Sd3
- 2.Qe4#
- 1...Sfh3
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sg4
- 2.Qe4#
- 1...c4
- 2.Qd4#
- 1...Bb2
- Tries
- 1.Ka1?
- 1...Bd2
- 2.Qxd2#
- 1...Se2
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Sgh3
- 2.Qf3#
- 1...Sd1
- 2.Qe4#
- 1...Sh1
- 2.Qe4#
- 1...Sd3
- 2.Qe4#
- 1...Sfh3
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sg4
- 2.Qe4#
- 1...c4
- 2.Qd4#
- 1...Bb2+!
- 1...Bd2
- 1.Bh1?
- 1...Bb2
- 2.Qd2#
- 1...Bd2
- 2.Qxd2#
- 1...Se2
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Sgh3
- 2.Qf3#
- 1...Sd1
- 2.Qe4#
- 1...Sd3
- 2.Qe4#
- 1...Sfh3
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sg4
- 2.Qe4#
- 1...c4
- 2.Qd4#
- 1...Sxh1!
- 1...Bb2
- 1.Ba1?
- 1...Bd2
- 2.Qxd2#
- 1...Se2
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Sgh3
- 2.Qf3#
- 1...Sd1
- 2.Qe4#
- 1...Sh1
- 2.Qb3#
- 2.Qe4#
- 1...Sd3
- 2.Qe4#
- 1...Sfh3
- 2.Qb3#
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sg4
- 2.Qb3#
- 2.Qe4#
- 1...c4
- 2.Qd4#
- 1...Bb2!
- 1...Bd2
- 1.Bd2+?
- 1...Bxd2
- 2.Qxd2#
- 1...Ke2!
- 1...Bxd2
- 1.Bf6?
- threat
- 2.Bg5#
- 1...Bd2
- 2.Qxd2#
- 1...Se2
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Sgh3
- 2.Qf3#
- 1...Sd3
- 2.Qe4#
- 1...Sfh3
- 2.Qb3#
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Bb2!
- threat
- 1.Bg7?
- threat
- 2.Bh6#
- 1...Bd2
- 2.Qxd2#
- 1...Se2
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Sgh3
- 2.Qf3#
- 1...Sd3
- 2.Qe4#
- 1...Sfh3
- 2.Qb3#
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sg4
- 2.Qb3#
- 2.Qe4#
- 1...Bb2!
- threat
- 1.Bh8?
- 1...Bd2
- 2.Qxd2#
- 1...Se2
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Sgh3
- 2.Qf3#
- 1...Sd1
- 2.Qe4#
- 1...Sh1
- 2.Qb3#
- 2.Qe4#
- 1...Sd3
- 2.Qe4#
- 1...Sfh3
- 2.Qb3#
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sg4
- 2.Qb3#
- 2.Qe4#
- 1...c4
- 2.Qd4#
- 1...Bb2!
- 1...Bd2
- 1.Rc2?
- 1...Bd2
- 2.Qxd2#
- 1...Se2
- 2.Qf3#
- 1...Bb2
- 2.Qd2#
- 1...Sf3
- 2.Qxf3#
- 1...Sgh3
- 2.Qf3#
- 1...Sd1
- 2.Qe4#
- 1...Sh1
- 2.Qe4#
- 1...Sd3
- 2.Qe4#
- 1...Sfh3
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sg4
- 2.Qe4#
- 1...c4
- 2.Qd4#
- 1...a2+!
- 1...Bd2
- 1.Rd2?
- threat
- 2.Qg5#
- 1...Bxd2
- 2.Qxd2#
- 1...Se2
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Sgh3
- 2.Qf3#
- 1...Sd3
- 2.Qe4#
- 2.Qxd3#
- 1...Sfh3
- 2.Qe4#
- 2.Qe6#
- 2.Qd3#
- 1...Se4
- 2.Qxe4#
- 2.Qd3#
- 1...a2+!
- threat
- 1.Re2+?
- 1...Sxe2
- 2.Qf3#
- 1...Kxe2!
- 1...Sxe2
- 1.Qe6+?
- 1...Se4
- 2.Qxe4#
- 1...Kd3!
- 1...Se4
- 1.Qxc5+?
- 1...Kd3
- 2.Qd4#
- 1...dxc5!
- 1...Kd3
- 1.g4?
- 1...Sxg4
- 2.Qe4#
- 1...Bb2
- 2.Qd2#
- 1...Bd2
- 2.Qxd2#
- 1...Se2
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Sgh3
- 2.Qf3#
- 1...Sd1
- 2.Qe4#
- 1...Sh1
- 2.Qe4#
- 1...Sd3
- 2.Qe4#
- 1...Sfh3
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...c4
- 2.Qd4#
- 1...Kf4!
- 1...Sxg4
- 1.Ka1?
- Keys
- 1.Bf1!
- 1...Se4
- 2.Qd3#
- 1...Bb2
- 2.Bd2#
- 1...Bd2
- 2.Bxd2#
- 1...Se2
- 2.Rxe2#
- 1...Sf3
- 2.Re2#
- 1...Sgh3
- 2.Re2#
- 1...Sd1
- 2.Qd3#
- 1...Sh1
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sfh3
- 2.Qd3#
- 1...Sg4
- 2.Qd3#
- 1...c4
- 2.Bd4#
- 1...Se4
- 1.Bf1!
This anticipates 101159(1920)
This is a version
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 12
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(a);N_GUARD::QAB1(F)
- B(a);N_GUARD::QAB1(F),XB(a)
- S(b);N_GUARD::QAR1(F)
- S(b);N_GUARD::QAR1(F),XS(b)
- S(c);N_GUARD::QAR1(F)
- S(c);N_GUARD::QAR1(F),XS(c)
- P(f);N_GUARD::QAB1(F)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- B(a);N_GUARD::QAB1(F),XB(a)
- S(b);N_GUARD::QAR1(F)
- S(b);N_GUARD::QAR1(F),XS(b)
- S(c);N_GUARD::QAR1(F)
- S(c);N_GUARD::QAR1(F),XS(c)
- P(f);N_GUARD::QAB1(F)
- Refutation
- B(a);CHECK
- Try
- B(C);
- Vars
- B(a);N_GUARD::QAB1(F)
- B(a);N_GUARD::QAB1(F),XB(a)
- S(b);N_GUARD::QAR1(F)
- S(b);N_GUARD::QAR1(F),XS(b)
- S(c);N_GUARD::QAR1(F)
- S(c);N_GUARD::QAR1(F),XS(c)
- P(f);N_GUARD::QAB1(F)
- Refutation
- S(c);XB(C)
- Try
- B(D);
- Vars
- B(a);N_GUARD::QAB1(F),XB(a)
- S(b);N_GUARD::QAR1(F)
- S(b);N_GUARD::QAR1(F),XS(b)
- S(c);N_GUARD::QAR1(F)
- S(c);N_GUARD::QAR1(F),XS(c)
- P(f);N_GUARD::QAB1(F)
- Refutation
- B(a);
- Try
- B(D);CHECK
- Vars
- B(a);OGATE,XB(D)::QAB1(F),XB(a)
- Refutation
- K(e);P-FLIGHT
- Try
- B(D);
- Threat
- B(D)
- Vars
- B(a);N_GUARD::QAB1(F),XB(a)
- S(b);N_GUARD::QAR1(F)
- S(b);N_GUARD::QAR1(F),XS(b)
- S(c);N_GUARD::QAR1(F)
- S(c);N_GUARD::QAR1(F),XS(c)
- Refutation
- B(a);
- Try
- B(D);
- Threat
- B(D)
- Vars
- B(a);N_GUARD::QAB1(F),XB(a)
- S(b);N_GUARD::QAR1(F)
- S(b);N_GUARD::QAR1(F),XS(b)
- S(c);N_GUARD::QAR1(F)
- S(c);N_GUARD::QAR1(F),XS(c)
- Refutation
- B(a);
- Try
- B(D);
- Vars
- B(a);N_GUARD::QAB1(F),XB(a)
- S(b);N_GUARD::QAR1(F)
- S(b);N_GUARD::QAR1(F),XS(b)
- S(c);N_GUARD::QAR1(F)
- S(c);N_GUARD::QAR1(F),XS(c)
- P(f);N_GUARD::QAB1(F)
- Refutation
- B(a);
- Try
- R(B);
- Vars
- B(a);N_GUARD::QAB1(F),XB(a)
- S(b);N_GUARD::QAR1(F)
- B(a);N_GUARD::QAB1(F)
- S(b);N_GUARD::QAR1(F),XS(b)
- S(c);N_GUARD::QAR1(F)
- S(c);N_GUARD::QAR1(F),XS(c)
- P(f);N_GUARD::QAB1(F)
- Refutation
- P(d);CHECK
- Try
- R(B);
- Threat
- QAB(F)
- Vars
- B(a);OGATE,XR(B)::QAB1(F),XB(a)
- S(b);N_GUARD::QAR1(F)
- S(b);N_GUARD::QAR1(F),XS(b)
- Refutation
- P(d);CHECK
- Try
- R(B);CHECK
- Vars
- S(b);XR(B)::QAR1(F)
- Refutation
- K(e);P-FLIGHT,XR(B)
- Try
- Q(F);CHECK
- Vars
- S(c);N_GUARD,P_SPINS(c)::QAR1(F),XS(c)
- Refutation
- K(e);P-FLIGHT
- Try
- Q(F);CHECK,XP(f)
- Vars
- K(e);P-FLIGHT::QAR1(F)
- Refutation
- P(g);XQ(F)
- Try
- P(E);
- Vars
- S(c);N_GUARD,XP(E)::QAR1(F)
- B(a);N_GUARD::QAB1(F)
- B(a);N_GUARD::QAB1(F),XB(a)
- S(b);N_GUARD::QAR1(F)
- S(b);N_GUARD::QAR1(F),XS(b)
- S(c);N_GUARD::QAR1(F)
- S(c);N_GUARD::QAR1(F),XS(c)
- P(f);N_GUARD::QAB1(F)
- Refutation
- K(e);S_FLIGHT
- Try
- Actual
- B(C);
- Vars
- S(c);N_GUARD::QAR1(F)
- B(a);N_GUARD::B(D)
- B(a);N_GUARD::B(D),XB(a)
- S(b);N_GUARD::R1(B),XS(b)
- S(b);N_GUARD::R1(B)
- S(c);N_GUARD::QAR1(F),XS(c)
- P(f);N_GUARD::B(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).