MESON Chess Problem Database
Problem Display
PID: 61299 (n2K1n2/b1N2N2/2B2Pr1/3Qp3/4pkPB/R5R1/3rP3/8 w - - 0 1)
Groeneveld, Cornelis
3rd Prize, Tidskrift for Schack, 1999
#2
11 + 8
| 102 | Probleemblad | 2005 |
SOLUTION
- SOUND
- Sets
- 1...Ra2
- 2.Qxe4#
- 2.Qxe5#
- 1...Rb2
- 2.Qxe4#
- 2.Qxe5#
- 1...Rc2
- 2.Qxe4#
- 2.Qxe5#
- 1...Rxe2
- 2.Qxe5#
- 1...Rd4
- 2.e3#
- 1...Rxd5+
- 2.Sxd5#
- 1...Rg5
- 2.Bxg5#
- 1...Rxf6
- 2.Bg5#
- 1...Rh6
- 2.Bg5#
- 1...Bd4
- 2.Qxe4#
- 1...Bb8
- 2.e3#
- 1...Sb6
- 2.e3#
- 1...Se6+
- 2.Sxe6#
- 1...Sd7
- 2.Se6#
- 2.Qxe4#
- 1...Sh7
- 2.Se6#
- 1...Ra2
- Tries
- 1.Ke7?
- threat
- 2.Qxe4#
- 2.Qxe5#
- 1...Rxe2
- 2.Qxe5#
- 1...Rxd5
- 2.Sxd5#
- 1...Rd4
- 2.Qxe5#
- 2.e3#
- 1...Rg5
- 2.Bxg5#
- 2.Qxe4#
- 1...Bd4
- 2.Qxe4#
- 1...Sd7
- 2.Se6#
- 2.Qxe4#
- 1...e3
- 2.Qf3#
- 2.Qe4#
- 2.Qxe5#
- 1...Bc5+!
- threat
- 1.Kc8?
- threat
- 2.Qxe4#
- 2.Qxe5#
- 1...Rxe2
- 2.Qxe5#
- 1...Rxd5
- 2.Sxd5#
- 1...Rd4
- 2.Qxe5#
- 2.e3#
- 1...Rg5
- 2.Bxg5#
- 2.Qxe4#
- 1...Bd4
- 2.Qxe4#
- 1...Sd7
- 2.Se6#
- 2.Qxe4#
- 1...e3
- 2.Qf3#
- 2.Qe4#
- 2.Qxe5#
- 1...Sb6+!
- threat
- 1.Ke8?
- threat
- 2.Qxe4#
- 2.Qxe5#
- 1...Rxe2
- 2.Qxe5#
- 1...Rxd5
- 2.Sxd5#
- 1...Rd4
- 2.Qxe5#
- 2.e3#
- 1...Rg5
- 2.Bxg5#
- 2.Qxe4#
- 1...Bd4
- 2.Qxe4#
- 1...Sd7
- 2.Se6#
- 2.Qxe4#
- 1...e3
- 2.Qf3#
- 2.Qe4#
- 2.Qxe5#
- 1...Sxc7+!
- threat
- 1.Sg5?
- threat
- 2.Sh3#
- 1...Rxd5+
- 2.Sxd5#
- 1...Se6+
- 2.Sgxe6#
- 2.Scxe6#
- 1...Rxg5!
- threat
- 1.Sd6?
- threat
- 2.Qxe4#
- 1...Se6+
- 2.Sxe6#
- 1...Rxd5
- 2.Sxd5#
- 1...Rd4
- 2.e3#
- 1...e3
- 2.Qf3#
- 2.Qe4#
- 1...Rxe2!
- threat
- 1.Bd7?
- threat
- 2.Qxe5#
- 1...Se6+
- 2.Sxe6#
- 1...Rxd5
- 2.Sxd5#
- 1...Sxd7
- 2.Se6#
- 1...Rg5
- 2.Bxg5#
- 1...Bd4!
- threat
- 1.Rad3?
- threat
- 2.Qxe4#
- 2.Qxe5#
- 1...Se6+
- 2.Sxe6#
- 1...Rxe2
- 2.Qxe5#
- 1...exd3
- 2.Qf3#
- 2.Qe4#
- 2.Qxe5#
- 1...Rg5
- 2.Bxg5#
- 2.Qxe4#
- 1...Bd4
- 2.Qxe4#
- 1...Sd7
- 2.Se6#
- 2.Qxe4#
- 1...e3
- 2.Qf3#
- 2.Qe4#
- 2.Qxe5#
- 1...Rxd3!
- threat
- 1.Qxd2+?
- 1...Be3
- 2.Sd5#
- 2.Qxe3#
- 1...e3!
- 1...Be3
- 1.Qd4?
- threat
- 2.Sd5#
- 2.Raf3#
- 2.e3#
- 1...Se6+
- 2.Sxe6#
- 1...Rxe2
- 2.Sd5#
- 2.Raf3#
- 2.Qxe5#
- 1...Rxg4
- 2.Raf3#
- 2.Rgf3#
- 1...Bxd4
- 2.Sd5#
- 1...Sxc7
- 2.Raf3#
- 2.e3#
- 1...exd4
- 2.Sd5#
- 1...Rd3
- 2.Sd5#
- 1...Bb6
- 2.Raf3#
- 2.e3#
- 1...Sb6
- 2.Raf3#
- 2.e3#
- 1...Rxd4+!
- threat
- 1.Ke7?
- Keys
- 1.Ra4!
- threat
- 2.Rxe4#
- 1...Rxd5+
- 2.Sxd5#
- 1...Se6+
- 2.Sxe6#
- 1...Rxe2
- 2.Qxe5#
- 1...Rxg4
- 2.Rf3#
- 1...Rd4
- 2.e3#
- 1...Bd4
- 2.Qxe4#
- threat
- 1.Ra4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- R(a);N_PINQ(F),XP(A)::QAB1(F),XP(d)
- R(a);S_CUTB(f)::P(A)
- R(a);CHECK,XQ(F)::S(I),XR(a)
- R(e);N_GUARD::B(E),XR(e)
- R(e);N_GUARD,XP(H)::B(E)
- R(e);N_GUARD::B(E)
- B(f);N_PINQ(F)::QAR1(F),XP(b)
- B(f);N_GUARD::P(A)
- S(g);S_CUTB(f)::P(A)
- S(h);CHECK,N_GUARD::S(I),XS(h)
- S(h);N_GUARD::S(I)
- Tries
- Try
- K(K);N_SPINQ(F),S_FLIGHT
- Threat
- DUALS(2)
- Vars
- R(a);XP(A)::QAB1(F),XP(d)
- R(a);XQ(F)::S(I),XR(a)
- B(f);::QAR1(F),XP(b)
- Refutation
- B(f);CHECK
- Try
- K(K);N_SPINQ(F),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- R(a);XP(A)::QAB1(F),XP(d)
- R(a);XQ(F)::S(I),XR(a)
- B(f);::QAR1(F),XP(b)
- Refutation
- S(g);CHECK
- Try
- K(K);N_SPINQ(F),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- R(a);XP(A)::QAB1(F),XP(d)
- R(a);XQ(F)::S(I),XR(a)
- B(f);::QAR1(F),XP(b)
- Refutation
- S(g);CHECK,XS(I)
- Try
- S(J);
- Threat
- S(J)
- Vars
- R(a);CHECK,XQ(F)::S(I),XR(a)
- Refutation
- R(e);XS(J)
- Try
- S(J);N_SPINQ(F)
- Threat
- QAR1(F),XP(b)
- Vars
- S(h);CHECK,N_GUARD::S(I),XS(h)
- R(a);P_PINS(J),XQ(F)::S(I),XR(a)
- R(a);S_CUTB(f)::P(A)
- Refutation
- R(a);XP(A)
- Try
- B(G);N_SPINQ(F)
- Threat
- QAB1(F),XP(d)
- Vars
- S(h);CHECK,N_GUARD::S(I),XS(h)
- R(a);P_PINB(G),XQ(F)::S(I),XR(a)
- S(h);N_GUARD,XB(G)::S(I)
- R(e);N_GUARD::B(E),XR(e)
- Refutation
- B(f);
- Try
- R(B);N_SPINQ(F)
- Threat
- DUALS(2)
- Vars
- S(h);CHECK,N_GUARD::S(I),XS(h)
- R(a);XP(A)::QAB1(F),XP(d)
- B(f);::QAR1(F),XP(b)
- Refutation
- R(a);P_PINQ(F),XR(B)
- Try
- Q(F);CHECK,N_SPINQ(F),XR(a)
- Refutation
- P(b);P_SPINP(b)
- Try
- Q(F);P_PINP(b)
- Threat
- DUALS(3)
- Vars
- S(h);CHECK,N_GUARD::S(I),XS(h)
- B(f);N_SPINP(b),XQ(F)::S(I)
- P(d);N_SPINP(b),XQ(F)::S(I)
- R(a);::S(I)
- Refutation
- R(a);CHECK,N_SPINP(b),XQ(F)
- Try
- Actual
- R(B);P_PINP(b)
- Threat
- R1(B),XP(b)
- Vars
- R(a);CHECK,XQ(F)::S(I),XR(a)
- S(h);CHECK,N_GUARD::S(I),XS(h)
- R(a);N_PINQ(F),XP(A)::QAB1(F),XP(d)
- R(e);SBLOCK,XP(D)::R1(C)
- R(a);N_SPINP(b),S_CUTB(f)::P(A)
- B(f);N_PINQ(F),N_SPINP(b)::QAR1(F),XP(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).