MESON Chess Problem Database
Problem Display
PID: 102971 (7R/3pKB2/R2N3P/4Bpkp/r6p/r1b4P/3n2N1/1q4Q1 w - - 0 1)
Kofman, Rafael Moiseevich
Aleshin MT, 1956
#2
10 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qa2
- 2.Sf4#
- 1...Qc2
- 2.Sf4#
- 1...Qb2
- 2.Sf4#
- 1...Qb3
- 2.Sf4#
- 1...Qb4
- 2.Sf4#
- 1...Qb5
- 2.Sf4#
- 1...Qb8
- 2.Sf4#
- 1...Rd4
- 2.Bf6#
- 1...Rf4
- 2.Bxf4#
- 1...Ra5
- 2.Se1#
- 2.Bf4#
- 1...Rxa6
- 2.Se1#
- 2.Bf4#
- 1...Bb4
- 2.Bf4#
- 2.Bf6#
- 1...Bd4
- 2.Bf4#
- 1...Ba5
- 2.Bf6#
- 1...Sc4
- 2.Se1#
- 2.Bf4#
- 1...Se4
- 2.Bf4#
- 1...f4
- 2.Se1#
- 1...Qa2
- Tries
- 1.Se4+?
- 1...Qxe4
- 2.Rg6#
- 2.Rg8#
- 1...Rxe4
- 2.Rg6#
- 2.Rg8#
- 1...Sxe4
- 2.Bf4#
- 2.Rg6#
- 2.Rg8#
- 1...fxe4!
- 1...Qxe4
- 1.Bc4?
- threat
- 2.Se1#
- 2.Sf7#
- 1...Kg6
- 2.Se1#
- 2.Sf4#
- 2.Sxh4#
- 1...Qxg1
- 2.Sf7#
- 1...Rxc4
- 2.Sf7#
- 1...Rxa6
- 2.Se1#
- 1...Bxe5
- 2.Sf7#
- 1...Qd3
- 2.Se3#
- 2.Sf7#
- 1...Qe4
- 2.Sf7#
- 1...Qd1
- 2.Sf7#
- 1...Qe1
- 2.Sxe1#
- 2.Sf7#
- 1...Qf1
- 2.Sf7#
- 1...Qb4
- 2.Se1#
- 2.Se3#
- 2.Sf4#
- 1...Qb6
- 2.Se3#
- 1...Qb7
- 2.Sf7#
- 1...Ba1
- 2.Sf7#
- 1...Bb2
- 2.Sf7#
- 1...Bd4
- 2.Sf7#
- 1...Ba5
- 2.Sf7#
- 1...Sf1
- 2.Sf7#
- 1...Sf3
- 2.Sf7#
- 1...Se4
- 2.Sf7#
- 1...f4
- 2.Se1#
- 1...Bb4!
- threat
- 1.Be8?
- threat
- 2.Sf7#
- 1...Rxa6
- 2.Se1#
- 2.Bf4#
- 1...Bb4
- 2.Bf4#
- 2.Bf6#
- 1...Qa2
- 2.Sf4#
- 1...Qb3
- 2.Sf4#
- 1...Qb4
- 2.Sf4#
- 1...f4
- 2.Se1#
- 1...Qb6!
- threat
- 1.Raa8?
- threat
- 2.Rag8#
- 1...Rxa8
- 2.Se1#
- 2.Bf4#
- 1...Qb8
- 2.Sf4#
- 1...f4
- 2.Se1#
- 1...Bxe5!
- threat
- 1.Qe3+?
- 1...Rf4
- 2.Bxf4#
- 2.Qxf4#
- 1...f4!
- 1...Rf4
- 1.Se4+?
- Keys
- 1.Bb3!
- threat
- 2.Sf7#
- 1...Kg6
- 2.Sf4#
- 2.Sxh4#
- 1...Qxb3
- 2.Sf4#
- 1...Rxa6
- 2.Se1#
- 1...Bb4
- 2.Se1#
- 1...f4
- 2.Se1#
- threat
- 1.Bb3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 11
- Sets
- Q(a);N_GUARD::QAR(A)+S(B)
- Q(a);N_GUARD,P_PINS(F)::QAR(A)+S(B)
- R(e);S_CUTB(d)::B(D)
- R(e);N_GUARD::B(D),XR(e)
- B(d);S_CUTR(e)::B(D)
- B(d);N_GUARD::B(D)
- S(b);S_CUTR(e)::B(D)
- P(g);S_CUTR(e)::QAR(A)+S(B)
- Tries
- Try
- S(F);CHECK
- Refutation
- P(g);XS(F)
- Try
- B(I);
- Threat
- DUALS(2)
- Vars
- Q(a);XQ(A)::S(F)
- R(e);XB(I)::S(F)
- R(e);XR(E)::QAR(A)+S(B)
- B(d);XB(D)::S(F)
- Q(a);P_PINB(D)::S(F)
- Q(a);::S(F)
- Q(a);N_GUARD::QAR(A)+S(B)
- B(d);::S(F)
- S(b);::S(F)
- P(g);::QAR(A)+S(B)
- Refutation
- B(d);P_PINS(F)
- Try
- B(I);
- Threat
- S(F)
- Vars
- Q(a);N_GUARD::QAR(A)+S(B)
- Q(a);N_GUARD,P_PINS(F)::QAR(A)+S(B)
- P(g);S_CUTR(e)::QAR(A)+S(B)
- Refutation
- Q(a);
- Try
- R(E);
- Threat
- R(E)
- Vars
- Q(a);N_GUARD::QAR(A)+S(B)
- P(g);S_CUTR(e)::QAR(A)+S(B)
- Refutation
- B(d);XB(D)
- Try
- Q(A);CHECK
- Refutation
- P(g);P_SPINP(g)
- Try
- Actual
- B(I);
- Threat
- S(F)
- Vars
- Q(a);N_GUARD,XB(I)::QAR(A)+S(B)
- R(e);N_GUARD,XR(E)::QAR(A)+S(B)
- B(d);P_PINS(F),S_CUTR(e)::QAR(A)+S(B)
- P(g);S_CUTR(e)::QAR(A)+S(B)
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).