MESON Chess Problem Database
Problem Display
PID: 58790 (3n1R2/bb2B3/8/r3Q1N1/qr3pk1/1p1N1p1R/8/3B1K2 w - - 0 1)
Ott, Markus Johannes
2nd Prize, idee & form, 1998-1999
#2
8 + 10
| 1099 | WCSC | 1995 |
| 5396 | World Chess Solving Championship 1977-1996 | 1997 |
| 56 | The Problemist | 2005 |
| 15527 | schachkunst (1997-2010) (Hoffmann) | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Rd4
- 2.Sf2#
- 1...Re4
- 2.Bxf3#
- 1...Rb6
- 2.Sf2#
- 1...Rc5
- 2.Sf2#
- 1...Rd5
- 2.Bxf3#
- 1...Rxe5
- 2.Sxe5#
- 1...Ra6
- 2.Qf5#
- 1...Bf2
- 2.Sxf2#
- 1...Bd4
- 2.Rxf4#
- 2.Qxf4#
- 1...Bc5
- 2.Qf5#
- 1...Bb8
- 2.Sf2#
- 1...Be4
- 2.Rxf4#
- 2.Qxf4#
- 1...Bd5
- 2.Qf5#
- 1...Ba6
- 2.Bxf3#
- 1...Bc8
- 2.Bxf3#
- 1...Sc6
- 2.Bxf3#
- 1...Rd4
- Tries
- 1.Rfh8?
- threat
- 2.R8h4#
- 1...Bf2
- 2.Sxf2#
- 1...Rxe5!
- threat
- 1.Qd4?
- threat
- 2.Sf2#
- 2.Rxf4#
- 1...Rxd4
- 2.Sf2#
- 1...Rxg5
- 2.Sf2#
- 1...Bxd4
- 2.Rxf4#
- 1...Qb5
- 2.Rxf4#
- 1...Qa2
- 2.Rxf4#
- 1...Rf5
- 2.Sf2#
- 1...Bb8
- 2.Sf2#
- 2.Qg1#
- 1...Ba6
- 2.Bxf3#
- 2.Rxf4#
- 1...Se6
- 2.Sf2#
- 1...Sf7!
- threat
- 1.Qh8?
- threat
- 2.Qh4#
- 2.Qh5#
- 1...Rxg5
- 2.Qh4#
- 1...Qe8
- 2.Qh4#
- 1...Bf2
- 2.Sxf2#
- 2.Qh5#
- 1...Sf7!
- threat
- 1.Qe1?
- threat
- 2.Rh4#
- 2.Qh4#
- 1...Bf2
- 2.Sxf2#
- 1...Sf7!
- threat
- 1.Qe4?
- threat
- 2.Bxf3#
- 2.Rxf4#
- 1...Rxe4
- 2.Bxf3#
- 1...Bxe4
- 2.Rxf4#
- 1...Qa1
- 2.Rxf4#
- 1...Rf5
- 2.Bxf3#
- 2.Qxf5#
- 1...Be3
- 2.Bxf3#
- 1...Bb8
- 2.Sf2#
- 2.Bxf3#
- 1...Se6
- 2.Bxf3#
- 1...Sf7
- 2.Bxf3#
- 1...Rxg5!
- threat
- 1.Qc5?
- threat
- 2.Sf2#
- 2.Se5#
- 1...Rxc5
- 2.Sf2#
- 1...Bxc5
- 2.Se5#
- 1...Qa1
- 2.Sf2#
- 1...Qa2
- 2.Se5#
- 1...Re4
- 2.Sf2#
- 2.Bxf3#
- 1...Bb8
- 2.Sf2#
- 2.Qg1#
- 1...Ba6
- 2.Bxf3#
- 1...Sc6
- 2.Sf2#
- 2.Bxf3#
- 1...Sf7
- 2.Sf2#
- 1...Qb5!
- threat
- 1.Qd5?
- threat
- 2.Se5#
- 2.Bxf3#
- 1...Rxd5
- 2.Bxf3#
- 1...Bxd5
- 2.Se5#
- 1...Qb5
- 2.Bxf3#
- 1...Re4
- 2.Bxf3#
- 1...Bd4
- 2.Bxf3#
- 2.Rxf4#
- 1...Bb8
- 2.Sf2#
- 2.Bxf3#
- 1...Ba6
- 2.Bxf3#
- 2.Qxf3#
- 1...Sc6
- 2.Bxf3#
- 2.Qxf3#
- 1...Sf7
- 2.Bxf3#
- 1...Qa1!
- threat
- 1.Qe6+?
- 1...Rf5
- 2.Se5#
- 2.Qxf5#
- 1...Sxe6!
- 1...Rf5
- 1.Rfh8?
- Keys
- 1.Bc5!
- threat
- 2.Sf2#
- 2.Qf5#
- 1...Rxc5
- 2.Sf2#
- 1...Bxc5
- 2.Qf5#
- 1...Qb5
- 2.Qf5#
- 1...Qd7
- 2.Sf2#
- 1...Qa2
- 2.Qf5#
- 1...Be4
- 2.Sf2#
- 2.Rxf4#
- 2.Qxf4#
- 1...Ba6
- 2.Bxf3#
- 2.Qf5#
- 1...Bc8
- 2.Sf2#
- 2.Bxf3#
- 1...Sf7
- 2.Sf2#
- threat
- 1.Bc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 12
- Sets
- R(d);S_CUTB(h)::S(C)
- R(d);S_CUTB(i)::B(A),XP(b)
- R(g);S_CUTB(h)::S(C)
- R(g);S_CUTB(i)::B(A),XP(b)
- R(g);XQ(E)::S(C),XR(g)
- R(g);N_GUARD::QAB1(E)
- B(h);N_GUARD::S(C),XB(h)
- B(h);S_CUTR(g)::QAB1(E)
- B(h);N_GUARD::S(C)
- B(i);S_CUTR(g)::QAB1(E)
- B(i);N_GUARD,P_PINS(C)::B(A),XP(b)
- B(i);N_GUARD::B(A),XP(b)
- S(j);S_CUTB(i)::B(A),XP(b)
- Tries
- Try
- R(H);
- Threat
- R1(H)
- Vars
- B(h);N_GUARD::S(C),XB(h)
- Refutation
- R(g);XQ(E)
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- R(d);XQ(E)::S(C)
- R(g);XS(F)::S(C)
- B(h);XQ(E)::R1(H),XP(e)
- Q(c);P_PINS(C)::R1(H),XP(e)
- Q(c);::R1(H),XP(e)
- R(g);::S(C)
- S(j);::S(C)
- Refutation
- S(j);
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- R(g);XS(F)::QAR1(E)
- Q(c);::QAR1(E)
- Refutation
- S(j);
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- B(h);N_GUARD::S(C),XB(h)
- Refutation
- S(j);
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- R(d);XQ(E)::B(A),XP(b)
- B(i);XQ(E)::R1(H),XP(e)
- Q(c);P_PINB(A)::R1(H),XP(e)
- B(h);::B(A),XP(b)
- S(j);::B(A),XP(b)
- Refutation
- R(g);XS(F)
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- R(g);XQ(E)::S(C)
- B(h);XQ(E)::S(C)
- Q(c);P_PINB(A)::S(C)
- Q(c);::S(C)
- B(i);N_GUARD,P_PINS(C)::B(A),XP(b)
- S(j);::S(C)
- Refutation
- Q(c);P_PINS(C)
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- R(g);XQ(E)::B(A),XP(b)
- B(i);XQ(E)::S(C)
- Q(c);P_PINS(C)::B(A),XP(b)
- R(d);::B(A),XP(b)
- S(j);::B(A),XP(b)
- Refutation
- Q(c);P_PINB(A)
- Try
- Q(E);CHECK
- Refutation
- S(j);XQ(E)
- Try
- Actual
- B(G);
- Threat
- DUALS(2)
- Vars
- R(g);XB(G)::S(C)
- B(h);XB(G)::QAB1(E)
- Q(c);P_PINS(C)::QAB1(E)
- Q(c);::S(C)
- Q(c);::QAB1(E)
- S(j);::S(C)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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