MESON Chess Problem Database
Problem Display
PID: 101639 (2Qrn1Bb/4p3/8/5RN1/3k1B2/1p4R1/1p6/1nq1NbK1 w - - 0 1)
Larrain, Santiago
White-100 JT, 1980-1981
#2
8 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qd2
- 2.Qc5#
- 1...Qe3+
- 2.Bxe3#
- 1...Qxf4
- 2.Qc5#
- 1...Qd1
- 2.Be3#
- 2.Qc5#
- 1...Qxe1
- 2.Qc5#
- 1...Qc2
- 2.Be3#
- 1...Qc5
- 2.Qxc5#
- 1...Rd5
- 2.Rxd5#
- 1...Bg2
- 2.Rd3#
- 1...Bd3
- 2.Rxd3#
- 1...Bh3
- 2.Rd3#
- 1...Bc4
- 2.Qc5#
- 1...Be5
- 2.Bxe5#
- 1...Sd2
- 2.Be3#
- 1...Sc3
- 2.Qc5#
- 1...Sd6
- 2.Rd5#
- 1...Sf6
- 2.Be5#
- 1...Sg7
- 2.Be5#
- 2.Qxd8#
- 1...Qd2
- Tries
- 1.Sc2+?
- 1...bxc2
- 2.Qc5#
- 1...Qxc2!
- 1...bxc2
- 1.Qc6?
- threat
- 2.Sgf3#
- 2.Se6#
- 2.Qe4#
- 1...Qe3+
- 2.Bxe3#
- 1...Qxf4
- 2.Se6#
- 2.Qc5#
- 2.Qb6#
- 1...Qxe1
- 2.Qc5#
- 2.Qb6#
- 1...Qd1
- 2.Se6#
- 2.Be3#
- 2.Qe4#
- 2.Qc5#
- 2.Qb6#
- 1...Qc2
- 2.Sgf3#
- 2.Se6#
- 2.Be3#
- 1...Qc3
- 2.Se6#
- 2.Qe4#
- 1...Qc4
- 2.Qe4#
- 1...Qc5
- 2.Qe4#
- 2.Qxc5#
- 1...Rd5
- 2.Rxd5#
- 2.Qxd5#
- 1...Rd6
- 2.Sgf3#
- 2.Qe4#
- 1...Be2
- 2.Se6#
- 2.Qe4#
- 1...Bg2
- 2.Se6#
- 2.Rd3#
- 1...Bd3
- 2.Sf3#
- 2.Se6#
- 2.Rxd3#
- 1...Bc4
- 2.Qe4#
- 2.Qc5#
- 2.Qb6#
- 1...Be5
- 2.Sgf3#
- 2.Se6#
- 2.Bxe5#
- 1...Sd2
- 2.Se6#
- 2.Be3#
- 1...Sc3
- 2.Sgf3#
- 2.Se6#
- 2.Qc5#
- 2.Qb6#
- 1...Sd6
- 2.Sgf3#
- 2.Se6#
- 2.Rd5#
- 2.Qd5#
- 1...Sf6
- 2.Sgf3#
- 2.Se6#
- 2.Be5#
- 1...Sc7
- 2.Sgf3#
- 2.Qe4#
- 1...Sg7
- 2.Sgf3#
- 2.Be5#
- 2.Qe4#
- 1...e5
- 2.Sgf3#
- 2.Se6#
- 1...e6
- 2.Sgf3#
- 2.Sxe6#
- 2.Qe4#
- 1...Qxc6!
- threat
- 1.Sc2+?
- Keys
- 1.Qe6!
- threat
- 2.Qe4#
- 1...Qe3+
- 2.Qxe3#
- 1...Qxf4
- 2.Qb6#
- 1...Qxe1
- 2.Qb6#
- 1...Rd5
- 2.Qxd5#
- 1...Bd3
- 2.Rxd3#
- 1...Be5
- 2.Qxe5#
- 1...Qc6
- 2.Qe3#
- 1...Qc2
- 2.Qe3#
- 1...Bg2
- 2.Rd3#
- 1...Sd2
- 2.Qe3#
- 1...Sc3
- 2.Sgf3#
- 2.Qb6#
- 1...Sd6
- 2.Qd5#
- 1...Sf6
- 2.Qe5#
- threat
- 1.Qe6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 9
- ADDED MATES = 1
- REMOVED MATES = 5
- Sets
- Q(b);N_GUARD::QAB1(G)
- Q(b);CHECK,N_GUARD::B(D),XQ(b)
- Q(b);N_GUARD,XB(D)::QAB1(G)
- Q(b);N_GUARD,XS(A)::QAB1(G)
- Q(b);N_GUARD::B(D)
- Q(b);N_GUARD::QAB1(G),XQ(b)
- R(h);N_GUARD::R1(E),XR(h)
- B(c);N_GUARD,P_PINS(A)::R1(C)
- B(c);N_GUARD,P_PINS(A)::R1(C),XB(c)
- B(c);P_PINS(A),S_CUTQ(b)::QAB1(G)
- B(j);N_GUARD::B(D),XB(j)
- S(a);S_CUTQ(b)::B(D)
- S(a);S_CUTQ(b)::QAB1(G)
- S(i);S_CUTR(h)::R1(E)
- S(i);S_CUTB(j)::B(D)
- Tries
- Try
- S(A);CHECK
- Vars
- P(e);XS(A)::QAB1(G)
- Refutation
- Q(b);XS(A)
- Try
- Q(G);
- Threat
- DUALS(3)
- Vars
- Q(b);CHECK,N_GUARD::B(D),XQ(b)
- Q(b);::QAR1(G)
- Refutation
- Q(b);XQ(G)
- Try
- Actual
- Q(G);
- Threat
- QAR1(G)
- Vars
- Q(b);CHECK,N_GUARD::QAB1(G),XQ(b)
- Q(b);N_GUARD,XB(D)::QAB(G)
- Q(b);N_GUARD,XS(A)::QAB(G)
- R(h);N_GUARD::QAR1(G),XR(h)
- B(c);N_GUARD,P_PINS(A)::R1(C),XB(c)
- B(j);N_GUARD::QAB1(G),XB(j)
- Q(b);N_GUARD::QAB1(G)
- B(c);N_GUARD,P_PINS(A)::R1(C)
- S(a);S_CUTQ(b)::QAB1(G)
- S(i);S_CUTR(h)::QAR1(G)
- S(i);S_CUTB(j)::QAB1(G)
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).