MESON Chess Problem Database
Problem Display
PID: 85742 (4B3/8/5p2/r2k1K2/pQ1BNp1b/n1pp3n/8/2r5 w - - 0 1)
Speckmann, Werner
The Problemist, 1961
#2
5 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Sxc3#
- 1...Rb1
- 2.Sxc3#
- 1...Rd1
- 2.Sxc3#
- 1...Re1
- 2.Sxc3#
- 1...Rf1
- 2.Sxc3#
- 1...Rg1
- 2.Sxc3#
- 1...Rh1
- 2.Sxc3#
- 1...Rc5
- 2.Qxc5#
- 1...Ra6
- 2.Qc5#
- 1...Ra7
- 2.Qc5#
- 1...Ra8
- 2.Qc5#
- 1...Be1
- 2.Sxf6#
- 1...Bf2
- 2.Sxf6#
- 1...Bg3
- 2.Sxf6#
- 1...Sc2
- 2.Sxc3#
- 1...Sb5
- 2.Qc5#
- 1...Sg5
- 2.Sxf6#
- 1...c2
- 2.Sc3#
- 1...Ra1
- Tries
- 1.Bf2?
- threat
- 2.Qd4#
- 1...Bxf2
- 2.Sxf6#
- 1...Sc2
- 2.Sxc3#
- 1...Sc4
- 2.Qb7#
- 1...Sb5
- 2.Qc5#
- 1...Sxf2!
- threat
- 1.Bxc3?
- threat
- 2.Qd4#
- 1...Rxc3
- 2.Sxc3#
- 1...Bf2
- 2.Sxf6#
- 1...Sc4
- 2.Qb7#
- 1...Sb5
- 2.Qc5#
- 1...Sc2!
- threat
- 1.Be3?
- threat
- 2.Qd4#
- 1...Sc2
- 2.Sxc3#
- 1...Sc4
- 2.Qb7#
- 1...Sb5
- 2.Qc5#
- 1...fxe3!
- threat
- 1.Bc5?
- threat
- 2.Qd4#
- 1...Rxc5
- 2.Qxc5#
- 1...Bf2
- 2.Sxf6#
- 1...Sc2
- 2.Sxc3#
- 1...Sc4
- 2.Qb7#
- 1...Sb5!
- threat
- 1.Be5?
- threat
- 2.Qd4#
- 1...Bf2
- 2.Sxf6#
- 1...Sc2
- 2.Sxc3#
- 1...Sc4
- 2.Qb7#
- 1...Sb5
- 2.Qc5#
- 1...fxe5!
- threat
- 1.Bb6?
- threat
- 2.Qd4#
- 1...Rc5
- 2.Qxc5#
- 1...Bf2
- 2.Sxf6#
- 1...Sc2
- 2.Sxc3#
- 1...Sb5
- 2.Qc5#
- 1...Sc4!
- threat
- 1.Bxf6?
- threat
- 2.Qd4#
- 1...Bxf6
- 2.Sxf6#
- 1...Sc2
- 2.Sxc3#
- 1...Sc4
- 2.Qb7#
- 1...Sb5
- 2.Qc5#
- 1...Bf2!
- threat
- 1.Bb5?
- threat
- 2.Qc5#
- 2.Qd6#
- 1...Sxb5
- 2.Qc5#
- 1...Sc4
- 2.Qc5#
- 2.Qxc4#
- 1...Ra6
- 2.Qc5#
- 1...Rxb5!
- threat
- 1.Bf2?
- Keys
- 1.Ba7!
- threat
- 2.Qd4#
- 1...Rxa7
- 2.Qc5#
- 1...Rc5
- 2.Qxc5#
- 1...Bf2
- 2.Sxf6#
- 1...Sc2
- 2.Sxc3#
- 1...Sc4
- 2.Qb7#
- 1...Sb5
- 2.Qc5#
- threat
- 1.Ba7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 13
- Sets
- R(a);N_GUARD::S(C),XP(c)
- R(i);N_GUARD::QAR1(A),XR(i)
- R(i);N_GUARD::QAR1(A)
- B(h);N_GUARD::S(C),XP(k)
- S(b);S_CUTR(a)::S(C),XP(c)
- S(b);S_CUTR(i)::QAR1(A)
- S(e);S_CUTB(h)::S(C),XP(k)
- P(c);S_CUTR(a)::S(C)
- Tries
- Try
- B(B);
- Threat
- QAR1(A)
- Vars
- B(h);N_GUARD,XB(B)::S(C),XP(k)
- S(b);S_CUTR(a)::S(C),XP(c)
- S(b);SBLOCK::QAB(A)
- S(b);S_CUTR(i)::QAR1(A)
- Refutation
- S(e);XB(B)
- Try
- B(B);XP(c)
- Threat
- QAR1(A)
- Vars
- R(a);XB(B)::S(C),XR(a)
- B(h);N_GUARD::S(C),XP(k)
- S(b);SBLOCK::QAB(A)
- S(b);S_CUTR(i)::QAR1(A)
- Refutation
- S(b);
- Try
- B(B);
- Threat
- QAR1(A)
- Vars
- S(b);S_CUTR(a)::S(C),XP(c)
- S(b);SBLOCK::QAB(A)
- S(b);S_CUTR(i)::QAR1(A)
- Refutation
- P(g);XB(B)
- Try
- B(B);
- Threat
- QAR1(A)
- Vars
- R(i);OGATE,XB(B)::QAR1(A),XR(i)
- B(h);N_GUARD::S(C),XP(k)
- S(b);S_CUTR(a)::S(C),XP(c)
- S(b);SBLOCK::QAB(A)
- Refutation
- S(b);
- Try
- B(B);
- Threat
- QAR1(A)
- Vars
- B(h);N_GUARD::S(C),XP(k)
- S(b);S_CUTR(a)::S(C),XP(c)
- S(b);SBLOCK::QAB(A)
- S(b);S_CUTR(i)::QAR1(A)
- Refutation
- P(k);XB(B)
- Try
- B(B);
- Threat
- QAR1(A)
- Vars
- R(i);N_GUARD::QAR1(A),XR(i)
- B(h);N_GUARD::S(C),XP(k)
- S(b);S_CUTR(a)::S(C),XP(c)
- S(b);S_CUTR(i)::QAR1(A)
- Refutation
- S(b);
- Try
- B(B);XP(k)
- Threat
- QAR1(A)
- Vars
- B(h);XB(B)::S(C),XB(h)
- S(b);S_CUTR(a)::S(C),XP(c)
- S(b);SBLOCK::QAB(A)
- S(b);S_CUTR(i)::QAR1(A)
- Refutation
- B(h);
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- S(b);XB(E)::QAR1(A)
- R(i);::QAR1(A)
- Refutation
- R(i);XB(E)
- Try
- Actual
- B(B);
- Threat
- QAR1(A)
- Vars
- R(i);N_GUARD,XB(B)::QAR1(A)
- R(i);N_GUARD::QAR1(A),XR(i)
- B(h);N_GUARD::S(C),XP(k)
- S(b);S_CUTR(a)::S(C),XP(c)
- S(b);SBLOCK::QAB(A)
- S(b);S_CUTR(i)::QAR1(A)
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).