MESON Chess Problem Database
Problem Display
PID: 36848 (5QbK/r6p/2pRp1p1/2P1k3/2B1npPN/r4p1N/6P1/q1b1R1B1 w - - 0 1)
Maeder, Thomas
1/2 Prize, The Problemist, 1988/I
#2
11 + 13
| 3297 | FIDE Album (1986-1988) | 1995 |
| 4640 | Chess Wizardry: The New ABC of Chess Problems | 1996 |
| 3454 | kunstschach (1987-1996) (Hoffmann) | 2001 |
SOLUTION
- SOUND
- Sets
- 1...Qd4
- 2.Bxd4#
- 1...Qb1
- 2.Bd4#
- 1...Qa2
- 2.Bd4#
- 1...Ra2
- 2.Sxf3#
- 1...Rc3
- 2.Bd4#
- 1...Re3
- 2.Qxf4#
- 1...R3a4
- 2.Sxf3#
- 1...R3a5
- 2.Sxf3#
- 1...R3a6
- 2.Sxf3#
- 1...R7a4
- 2.Qg7#
- 1...R7a5
- 2.Qg7#
- 1...R7a6
- 2.Qg7#
- 1...Rf7
- 2.Rxe6#
- 1...Rg7
- 2.Qxg7#
- 1...Ra8
- 2.Qg7#
- 1...Bb2
- 2.Qxf4#
- 1...Be3
- 2.Sxf3#
- 1...Bf7
- 2.Qg7#
- 1...h5
- 2.Sxg6#
- 1...h6
- 2.Sxg6#
- 1...Qd4
- Tries
- 1.Sg5?
- threat
- 2.Rxe4#
- 1...Rf7
- 2.Rxe6#
- 1...Bf7
- 2.Qg7#
- 1...Qd4
- 2.Bxd4#
- 1...Qb1
- 2.Bd4#
- 1...Be3
- 2.Shxf3#
- 2.Sgxf3#
- 1...Re3!
- threat
- 1.Be3?
- threat
- 2.Sxf3#
- 2.Qxf4#
- 1...Rxe3
- 2.Qxf4#
- 1...Bxe3
- 2.Sxf3#
- 1...Sxc5
- 2.Bd4#
- 2.Bxf4#
- 2.Qxf4#
- 1...Sxd6
- 2.Qxf4#
- 1...fxg2
- 2.Sf3#
- 2.Qxf4#
- 1...fxe3
- 2.Sxf3#
- 2.Qf4#
- 1...Rf7
- 2.Rxe6#
- 1...Sd2
- 2.Bd4#
- 2.Bxf4#
- 2.Qxf4#
- 1...Sf2
- 2.Bd4#
- 2.Bxf4#
- 2.Qxf4#
- 1...Sc3
- 2.Bd4#
- 2.Bxf4#
- 2.Qxf4#
- 1...Sg3
- 2.Bd4#
- 2.Bxf4#
- 2.Qxf4#
- 1...Sg5
- 2.Bd4#
- 2.Bxf4#
- 2.Qxf4#
- 1...Sf6
- 2.Bd4#
- 2.Bxf4#
- 1...f2
- 2.Sf3#
- 2.Qxf4#
- 1...g5
- 2.Sxf3#
- 1...Bf7!
- threat
- 1.Re3?
- threat
- 2.Sxf3#
- 2.Qxf4#
- 1...Rxe3
- 2.Qxf4#
- 1...Bxe3
- 2.Sxf3#
- 1...fxg2
- 2.Sf3#
- 2.Qxf4#
- 1...fxe3
- 2.Sxf3#
- 2.Qf4#
- 1...Bf7
- 2.Qg7#
- 1...f2
- 2.Sf3#
- 2.Qxf4#
- 1...g5
- 2.Sxf3#
- 1...Rf7!
- threat
- 1.Rd5+?
- 1...exd5
- 2.Qd6#
- 1...cxd5!
- 1...exd5
- 1.Rd7?
- threat
- 2.Qg7#
- 1...Re3
- 2.Qxf4#
- 1...Be3
- 2.Sxf3#
- 1...Rxd7!
- threat
- 1.Qxg8?
- threat
- 2.Rxe6#
- 2.Qxe6#
- 1...Kf6
- 2.Rxe6#
- 2.Qxe6#
- 1...Re3
- 2.Qxe6#
- 1...Rf7
- 2.Rxe6#
- 1...Ra8
- 2.Rxe6#
- 1...Be3
- 2.Qxe6#
- 1...f2
- 2.Qxe6#
- 1...Re7!
- threat
- 1.gxf3?
- threat
- 2.Rxe4#
- 1...Rxf3
- 2.Sxf3#
- 1...Rf7
- 2.Rxe6#
- 1...Bf7
- 2.Qg7#
- 1...Re3
- 2.Qxf4#
- 1...Qd4
- 2.Bxd4#
- 1...Qb1
- 2.Bd4#
- 1...Be3!
- threat
- 1.Sg5?
- Keys
- 1.g5!
- threat
- 2.Qf6#
- 1...Re3
- 2.Qxf4#
- 1...Rf7
- 2.Rxe6#
- 1...Be3
- 2.Sxf3#
- 1...Bf7
- 2.Qg7#
- threat
- 1.g5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 16
- Sets
- Q(a);N_GUARD::B(B),XQ(a)
- Q(a);N_GUARD::B(B)
- R(c);N_GUARD::S(G),XP(d)
- R(c);S_CUTQ(a)::B(B)
- R(c);N_SPINS(e),S_CUTB(b)::QAB1(J),XP(f)
- R(k);N_GUARD::QAB(J)
- R(k);S_CUTB(m)::R1(I),XP(i)
- R(k);N_GUARD::QAB(J),XR(k)
- B(b);N_GUARD::QAB1(J),XP(f)
- B(b);N_SPINS(e),S_CUTR(c)::S(G),XP(d)
- B(m);S_CUTR(k)::QAB(J)
- P(l);N_GUARD::S(G),XP(j)
- Tries
- Try
- S(D);
- Threat
- R1(A),XS(e)
- Vars
- R(k);S_CUTB(m)::R1(I),XP(i)
- B(m);S_CUTR(k)::QAB(J)
- Q(a);N_GUARD::B(B),XQ(a)
- Q(a);N_GUARD::B(B)
- Refutation
- R(c);N_SPINS(e)
- Try
- B(B);N_PINS(e)
- Threat
- DUALS(2)
- Vars
- R(c);XB(B)::QAB1(J),XP(f)
- B(b);XB(B)::S(G),XP(d)
- S(e);XR(I)::QAB1(J),XP(f)
- R(k);S_CUTB(m)::R1(I),XP(i)
- P(j);::S(G),XP(d)
- Refutation
- B(m);
- Try
- R(A);
- Threat
- DUALS(2)
- Vars
- R(c);N_SPINS(e),XR(A)::QAB1(J),XP(f)
- B(b);N_SPINS(e),XR(A)::S(G),XP(d)
- B(m);S_CUTR(k)::QAB(J)
- P(j);::S(G),XP(d)
- Refutation
- R(k);
- Try
- R(I);CHECK
- Vars
- P(i);XR(I)::QAB1(J)
- Refutation
- P(h);XR(I)
- Try
- R(I);
- Threat
- QAB(J)
- Vars
- R(c);N_SPINS(e),S_CUTB(b)::QAB1(J),XP(f)
- B(b);N_SPINS(e),S_CUTR(c)::S(G),XP(d)
- Refutation
- R(k);XR(I)
- Try
- Q(J);XB(m)
- Threat
- DUALS(2)
- Vars
- R(c);N_SPINS(e)::QAR1(J),XP(i)
- R(k);::R1(I),XP(i)
- R(k);P_PINQ(J)::R1(I),XP(i)
- B(b);N_SPINS(e)::QAR1(J),XP(i)
- P(d);::QAR1(J),XP(i)
- Refutation
- R(k);
- Try
- P(C);XP(d)
- Threat
- R1(A),XS(e)
- Vars
- R(c);XP(C)::S(G),XR(c)
- R(k);S_CUTB(m)::R1(I),XP(i)
- B(m);S_CUTR(k)::QAB(J)
- R(c);N_SPINS(e),S_CUTB(b)::QAB1(J),XP(f)
- Q(a);N_GUARD::B(B),XQ(a)
- Q(a);N_GUARD::B(B)
- Refutation
- B(b);N_SPINS(e)
- Try
- Actual
- P(F);
- Threat
- QAB1(J)
- Vars
- R(c);N_SPINS(e),S_CUTB(b)::QAB1(J),XP(f)
- R(k);S_CUTB(m)::R1(I),XP(i)
- B(b);N_SPINS(e),S_CUTR(c)::S(G),XP(d)
- B(m);S_CUTR(k)::QAB(J)
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).