MESON Chess Problem Database
Problem Display
PID: 263256 (3R3B/5Brb/1NpP2p1/P1k5/K5R1/np3p1Q/3N1b2/1r6 w - - 0 1)
van Dooren, Rene
Szachy, 1985
#2
10 + 10
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Sxb3#
- 1...Rc1
- 2.Sxb3#
- 1...Rd1
- 2.Sxb3#
- 1...Re1
- 2.Sxb3#
- 1...Rf1
- 2.Sxb3#
- 1...Rg1
- 2.Sxb3#
- 1...Rh1
- 2.Sxb3#
- 1...Rxf7
- 2.Se4#
- 1...Rg8
- 2.Se4#
- 2.Rg5#
- 1...Bd4
- 2.Se4#
- 1...Sc2
- 2.Rc4#
- 1...Sc4
- 2.Rxc4#
- 1...Sb5
- 2.Rc4#
- 1...b2
- 2.Sb3#
- 1...Ra1
- Tries
- 1.Sdc4?
- threat
- 2.Sd7#
- 1...Sxc4
- 2.Rxc4#
- 1...Rxf7!
- threat
- 1.Bxg7?
- threat
- 2.Se4#
- 2.Rg5#
- 1...Re1
- 2.Sxb3#
- 1...Rg1
- 2.Sxb3#
- 2.Se4#
- 1...Be3
- 2.Se4#
- 1...Bg3
- 2.Se4#
- 2.Bd4#
- 1...Bd4
- 2.Se4#
- 2.Bxd4#
- 1...Bh4
- 2.Se4#
- 2.Bd4#
- 1...Sc4
- 2.Se4#
- 2.Rxc4#
- 1...g5!
- threat
- 1.Rb4?
- threat
- 2.Se4#
- 1...Sc4
- 2.Rxc4#
- 1...Re1
- 2.Sxb3#
- 1...g5!
- threat
- 1.Qh2?
- threat
- 2.Sd7#
- 2.Qe5#
- 2.Qxf2#
- 1...Rxf7
- 2.Se4#
- 2.Qe5#
- 2.Qxf2#
- 1...Re1
- 2.Sxb3#
- 2.Sd7#
- 1...Rf1
- 2.Sxb3#
- 2.Sd7#
- 2.Qe5#
- 1...Be1
- 2.Sd7#
- 2.Qe5#
- 1...Bg1
- 2.Sd7#
- 2.Qe5#
- 1...Be3
- 2.Sd7#
- 2.Qe5#
- 1...Bd4
- 2.Se4#
- 2.Sd7#
- 1...Bh4
- 2.Sd7#
- 2.Qe5#
- 1...Sc2
- 2.Sd7#
- 2.Rc4#
- 2.Qe5#
- 1...Sc4
- 2.Sd7#
- 2.Rxc4#
- 1...Sb5
- 2.Sd7#
- 2.Rc4#
- 2.Qe5#
- 1...Bg3!
- threat
- 1.Qxf3?
- threat
- 2.Qxf2#
- 1...Rxf7
- 2.Se4#
- 1...Re1
- 2.Sxb3#
- 1...Rf1
- 2.Sxb3#
- 1...Be1
- 2.Qe3#
- 1...Be3
- 2.Qxe3#
- 1...Bg3
- 2.Qe3#
- 1...Bd4
- 2.Se4#
- 1...Bh4
- 2.Qe3#
- 1...Sc2
- 2.Rc4#
- 2.Qc3#
- 1...Sc4
- 2.Rxc4#
- 1...Sb5
- 2.Rc4#
- 1...Bg1!
- threat
- 1.Qg3?
- threat
- 2.Sd7#
- 2.Qxf2#
- 2.Qe5#
- 1...Rxf7
- 2.Se4#
- 2.Qxf2#
- 2.Qe5#
- 1...Re1
- 2.Sxb3#
- 2.Sd7#
- 1...Rf1
- 2.Sxb3#
- 2.Sd7#
- 2.Qe5#
- 1...Be1
- 2.Sd7#
- 2.Qe5#
- 1...Bg1
- 2.Sd7#
- 2.Qe5#
- 1...Be3
- 2.Sd7#
- 2.Qe5#
- 1...Bd4
- 2.Se4#
- 2.Sd7#
- 1...Sc2
- 2.Sd7#
- 2.Rc4#
- 2.Qe5#
- 1...Sc4
- 2.Sd7#
- 2.Rxc4#
- 1...Sb5
- 2.Sd7#
- 2.Rc4#
- 2.Qe5#
- 1...Bxg3!
- threat
- 1.Sdc4?
- Keys
- 1.Qh6!
- threat
- 2.Qg5#
- 1...Rxf7
- 2.Se4#
- 1...Re1
- 2.Sxb3#
- 1...Be3
- 2.Qxe3#
- 1...Bg3
- 2.Qe3#
- 1...Bd4
- 2.Se4#
- 1...Bh4
- 2.Qe3#
- 1...Sc4
- 2.Rxc4#
- 1...g5
- 2.Sd7#
- threat
- 1.Qh6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 9
- Sets
- R(a);N_GUARD::S(A),XP(d)
- R(i);XB(H)::S(A)
- B(b);SBLOCK::S(A)
- S(c);N_GUARD::R1(D)
- S(c);N_GUARD::R1(D),XS(c)
- P(d);S_CUTR(a)::S(A)
- Tries
- Try
- S(A);
- Threat
- S(F)
- Vars
- S(c);OGATE,XS(A)::R1(D),XS(c)
- Refutation
- R(i);XB(H)
- Try
- B(J);XR(i)
- Threat
- DUALS(2)
- Vars
- R(a);N_GUARD::S(A),XP(d)
- B(b);::S(A)
- Refutation
- P(h);
- Try
- R(D);
- Threat
- S(A)
- Vars
- S(c);N_GUARD::R1(D),XS(c)
- R(a);N_GUARD::S(A),XP(d)
- Refutation
- P(h);
- Try
- Q(B);
- Threat
- DUALS(3)
- Refutation
- B(b);
- Try
- Q(B);XP(e)
- Threat
- QAB(B),XB(b)
- Vars
- R(i);XB(H)::S(A)
- R(a);N_GUARD::S(A),XP(d)
- B(b);N_GUARD::QAB(B)
- B(b);N_GUARD::QAB(B),XB(b)
- B(b);SBLOCK::S(A)
- S(c);N_GUARD::R1(D),XS(c)
- S(c);N_GUARD::R1(D)
- Refutation
- B(b);
- Try
- Q(B);
- Threat
- DUALS(3)
- Refutation
- B(b);XQ(B)
- Try
- Actual
- Q(B);
- Threat
- QAR(B)
- Vars
- R(i);XB(H)::S(A)
- R(a);N_GUARD::S(A),XP(d)
- B(b);N_GUARD::QAB(B),XB(b)
- B(b);N_GUARD::QAB(B)
- B(b);SBLOCK::S(A)
- S(c);N_GUARD::R1(D),XS(c)
- P(h);::S(F)
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).