MESON Chess Problem Database
Problem Display
PID: 170020 (R7/1p2k3/1Pp1P3/4PK2/n4P1p/2p3bP/2Pn1NQ1/3R2B1 w - - 0 1)
Olchovski, Ernesto P
Enroque!!, 1947
#2
12 + 8
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Bxf2
- 2.Qg5#
- 2.Qg7#
- 1...Bh2
- 2.Qg5#
- 2.Qg7#
- 1...Bxf4
- 2.Qg7#
- 1...Sb1
- 2.Rd7#
- 1...Sf1
- 2.Rd7#
- 1...Sb3
- 2.Rd7#
- 1...Sf3
- 2.Rd7#
- 1...Sc4
- 2.Rd7#
- 1...Se4
- 2.Rd7#
- 1...c5
- 2.Qxb7#
- 1...Bxf2
- Tries
- 1.Se4?
- 1...Bxf4
- 2.Qg7#
- 1...Sxe4
- 2.Rd7#
- 1...Sxb6
- 2.Bc5#
- 1...Be1
- 2.Qg5#
- 2.Qg7#
- 1...Bf2
- 2.Qg5#
- 2.Qg7#
- 1...Bh2
- 2.Qg5#
- 2.Qg7#
- 1...Sb1
- 2.Rd7#
- 1...Sf1
- 2.Rd7#
- 1...Sb3
- 2.Rd7#
- 1...Sf3
- 2.Rd7#
- 1...Sc4
- 2.Rd7#
- 1...Sb2
- 2.Bc5#
- 1...Sc5
- 2.Bxc5#
- 1...c5!
- 1...Bxf4
- 1.Qd5?
- threat
- 2.Qd6#
- 2.Qd7#
- 2.Qd8#
- 1...Sxb6
- 2.Qc5#
- 2.Qd6#
- 2.Qd8#
- 1...Sc4
- 2.Qd7#
- 2.Qd8#
- 1...Se4
- 2.Qd7#
- 2.Qd8#
- 1...Sc5
- 2.Qxc5#
- 2.Qd6#
- 2.Qd8#
- 1...cxd5!
- threat
- 1.Qxc6?
- threat
- 2.Re8#
- 2.Qxb7#
- 2.Qd7#
- 2.Qe8#
- 2.Qd6#
- 2.Qc7#
- 1...Sxb6
- 2.Re8#
- 2.Qe8#
- 2.Qc5#
- 2.Qd6#
- 1...Sc4
- 2.Rd7#
- 2.Re8#
- 2.Qxb7#
- 2.Qd7#
- 2.Qe8#
- 2.Qc7#
- 1...Se4
- 2.Rd7#
- 2.Re8#
- 2.Qxb7#
- 2.Qd7#
- 2.Qe8#
- 2.Qc7#
- 1...Sc5
- 2.Re8#
- 2.Qe8#
- 2.Qxc5#
- 2.Qd6#
- 1...bxc6!
- threat
- 1.Qxg3?
- threat
- 2.Qxh4#
- 2.Qg5#
- 2.Qg7#
- 1...Sf3
- 2.Rd7#
- 2.Qg7#
- 1...Se4
- 2.Rd7#
- 2.Qg7#
- 1...hxg3!
- threat
- 1.Se4?
- Keys
- 1.Sh1!
- 1...Bxf4
- 2.Qg7#
- 1...Sxb6
- 2.Bc5#
- 1...Be1
- 2.Qg5#
- 2.Qg7#
- 1...Bf2
- 2.Qg5#
- 2.Qg7#
- 1...Bh2
- 2.Qg5#
- 2.Qg7#
- 1...Sb1
- 2.Rd7#
- 1...Sf1
- 2.Rd7#
- 1...Sb3
- 2.Rd7#
- 1...Sf3
- 2.Rd7#
- 1...Sc4
- 2.Rd7#
- 1...Se4
- 2.Rd7#
- 1...Sb2
- 2.Bc5#
- 1...Sc5
- 2.Bxc5#
- 1...c5
- 2.Qxb7#
- 1...Bxf4
- 1.Sh1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- B(c);OGATE,XP(G)::QAR2(E)
- S(a);OGATE::R1(A)
- P(f);OGATE::QAR(E),XP(g)
- Tries
- Try
- S(D);
- Vars
- B(c);OGATE,XP(G)::QAR2(E)
- S(a);OGATE,XS(D)::R1(A)
- S(d);N_GUARD,XP(J)::B(B)
- S(a);OGATE::R1(A)
- S(d);N_GUARD::B(B)
- S(d);N_GUARD::B(B),XS(d)
- Refutation
- P(f);
- Try
- Q(E);
- Threat
- DUALS(3)
- Refutation
- P(f);XQ(E)
- Try
- Q(E);XP(f)
- Threat
- DUALS(6)
- Refutation
- P(g);XQ(E)
- Try
- Q(E);XB(c)
- Threat
- DUALS(3)
- Refutation
- P(e);XQ(E)
- Try
- Actual
- S(D);
- Vars
- B(c);OGATE,XP(G)::QAR2(E)
- S(d);N_GUARD,XP(J)::B(B)
- S(a);OGATE::R1(A)
- S(d);N_GUARD::B(B)
- S(d);N_GUARD::B(B),XS(d)
- P(f);OGATE::QAR(E),XP(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).