MESON Chess Problem Database
Problem Display
PID: 109649 (B1b3K1/1rBp1R2/3r4/R1n1k3/2Q3Pn/b7/4P3/8 w - - 0 1)
Vleugels, Johan Hubert
Match: Netherlands - Poland, 1990
#2
8 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Qd5#
- 2.Qe4#
- 1...Rb2
- 2.Qd5#
- 2.Qe4#
- 1...Rb3
- 2.Qd5#
- 2.Qe4#
- 1...Rb4
- 2.Rxc5#
- 2.Qd5#
- 1...Rb5
- 2.Qd5#
- 1...Rb6
- 2.Qd5#
- 2.Qe4#
- 1...Ra7
- 2.Qd5#
- 2.Qe4#
- 1...Rxc7
- 2.Qe4#
- 1...Rb8
- 2.Qd5#
- 2.Qe4#
- 1...Bc1
- 2.Rxc5#
- 1...Bb2
- 2.Rxc5#
- 1...Sg2
- 2.Rf5#
- 1...Sf3
- 2.Rf5#
- 1...Sf5
- 2.Rxf5#
- 1...Sg6
- 2.Rf5#
- 1...Rb1
- Tries
- 1.Kh7?
- 1...Rxc7
- 2.Qe4#
- 1...Rb1
- 2.Qd5#
- 2.Qe4#
- 1...Rb2
- 2.Qd5#
- 2.Qe4#
- 1...Rb3
- 2.Qd5#
- 2.Qe4#
- 1...Rb4
- 2.Rxc5#
- 2.Qd5#
- 1...Rb5
- 2.Qd5#
- 1...Rb6
- 2.Qd5#
- 2.Qe4#
- 1...Ra7
- 2.Qd5#
- 2.Qe4#
- 1...Rb8
- 2.Qd5#
- 2.Qe4#
- 1...Bc1
- 2.Rxc5#
- 1...Bb2
- 2.Rxc5#
- 1...Sg2
- 2.Rf5#
- 1...Sf3
- 2.Rf5#
- 1...Sf5
- 2.Rxf5#
- 1...Sg6
- 2.Rf5#
- 1...Bb4!
- 1...Rxc7
- 1.Bb8?
- 1...Rxb8
- 2.Qe4#
- 1...Rb1
- 2.Qd5#
- 2.Qe4#
- 1...Rb2
- 2.Qd5#
- 2.Qe4#
- 1...Rb3
- 2.Qd5#
- 2.Qe4#
- 1...Rb4
- 2.Rxc5#
- 2.Qd5#
- 1...Rb5
- 2.Qd5#
- 1...Rb6
- 2.Qd5#
- 2.Qe4#
- 1...Ra7
- 2.Qd5#
- 2.Qe4#
- 1...Rc7
- 2.Qe4#
- 1...Bc1
- 2.Rxc5#
- 1...Bb2
- 2.Rxc5#
- 1...Sg2
- 2.Rf5#
- 1...Sf3
- 2.Rf5#
- 1...Sf5
- 2.Rxf5#
- 1...Sg6
- 2.Rf5#
- 1...Bb4!
- 1...Rxb8
- 1.Bxb7?
- threat
- 2.Qd5#
- 2.Qe4#
- 1...Sf5
- 2.Rxf5#
- 2.Qe4#
- 1...Bxb7!
- threat
- 1.Rb5?
- 1...Rxb5
- 2.Qd5#
- 1...Rxc7
- 2.Qe4#
- 1...Rb6
- 2.Qd5#
- 2.Qe4#
- 1...Ra7
- 2.Qd5#
- 2.Qe4#
- 1...Rb8
- 2.Qd5#
- 2.Qe4#
- 1...Bc1
- 2.Rxc5#
- 1...Bb2
- 2.Rxc5#
- 1...Sg2
- 2.Rf5#
- 1...Sf3
- 2.Rf5#
- 1...Sf5
- 2.Rxf5#
- 1...Sg6
- 2.Rf5#
- 1...Bb4!
- 1...Rxb5
- 1.Rf4?
- threat
- 2.Qe4#
- 1...Sf5
- 2.Rxf5#
- 1...Rb4
- 2.Rxc5#
- 1...Rb5!
- threat
- 1.Rf8?
- 1...Rxc7
- 2.Qe4#
- 1...Rb1
- 2.Qd5#
- 2.Qe4#
- 1...Rb2
- 2.Qd5#
- 2.Qe4#
- 1...Rb3
- 2.Qd5#
- 2.Qe4#
- 1...Rb4
- 2.Rxc5#
- 2.Qd5#
- 1...Rb5
- 2.Qd5#
- 1...Rb6
- 2.Qd5#
- 2.Qe4#
- 1...Ra7
- 2.Qd5#
- 2.Qe4#
- 1...Rb8
- 2.Qd5#
- 2.Qe4#
- 1...Bc1
- 2.Rxc5#
- 1...Bb2
- 2.Rxc5#
- 1...Sg2
- 2.Rf5#
- 1...Sf3
- 2.Rf5#
- 1...Sf5
- 2.Rxf5#
- 1...Sg6
- 2.Rf5#
- 1...Bb4!
- 1...Rxc7
- 1.Qd4+?
- 1...Ke6
- 2.Qxd6#
- 1...Kxd4!
- 1...Ke6
- 1.Qf4+?
- 1...Ke6
- 2.Qxd6#
- 1...Kd5!
- 1...Ke6
- 1.Qxc5+?
- 1...Ke4
- 2.Qe5#
- 1...Ke6
- 2.Qe3#
- 2.Qe5#
- 1...Bxc5!
- 1...Ke4
- 1.e3?
- 1...Rxc7
- 2.Qe4#
- 1...Rb1
- 2.Qd5#
- 2.Qe4#
- 1...Rb2
- 2.Qd5#
- 2.Qe4#
- 1...Rb3
- 2.Qd5#
- 2.Qe4#
- 1...Rb4
- 2.Rxc5#
- 2.Qd5#
- 1...Rb5
- 2.Qd5#
- 1...Rb6
- 2.Qd5#
- 2.Qe4#
- 1...Ra7
- 2.Qd5#
- 2.Qe4#
- 1...Rb8
- 2.Qd5#
- 2.Qe4#
- 1...Bc1
- 2.Rxc5#
- 1...Bb2
- 2.Rxc5#
- 1...Sg2
- 2.Rf5#
- 1...Sf3
- 2.Rf5#
- 1...Sf5
- 2.Rxf5#
- 1...Sg6
- 2.Rf5#
- 1...Bb4!
- 1...Rxc7
- 1.e4?
- threat
- 2.Qd5#
- 1...Sf5
- 2.Rxf5#
- 1...Rxc7!
- threat
- 1.Kh7?
- Keys
- 1.Kg7!
- threat
- 2.Re7#
- 1...Sf5+
- 2.Rxf5#
- 1...Rxc7
- 2.Qe4#
- 1...Rb5
- 2.Qd5#
- 1...Sg6
- 2.Rf5#
- threat
- 1.Kg7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 4
- Sets
- R(f);N_SPINS(c)::QAR1(B)
- R(f);N_SPINR(e),XB(E)::QAR1(B)
- B(a);N_GUARD::R(D),XS(c)
- S(b);N_GUARD::R1(F)
- S(b);N_GUARD::R1(F),XS(b)
- Tries
- Try
- K(H);S_FLIGHT
- Vars
- R(f);N_SPINR(e),XB(E)::QAR1(B)
- R(f);N_SPINS(c)::QAR1(B)
- B(a);N_GUARD::R(D),XS(c)
- S(b);N_GUARD::R1(F)
- S(b);N_GUARD::R1(F),XS(b)
- Refutation
- B(a);
- Try
- B(E);
- Vars
- R(f);N_SPINR(e),XB(E)::QAR1(B)
- R(f);N_SPINS(c)::QAR1(B)
- R(f);N_SPINR(e)::QAR1(B)
- B(a);N_GUARD::R(D),XS(c)
- S(b);N_GUARD::R1(F)
- S(b);N_GUARD::R1(F),XS(b)
- Refutation
- B(a);
- Try
- B(G);XR(f)
- Threat
- DUALS(2)
- Refutation
- B(h);XB(G)
- Try
- R(D);
- Vars
- R(f);N_SPINS(c),XR(D)::QAR1(B)
- R(f);N_SPINR(e),XB(E)::QAR1(B)
- B(a);N_GUARD::R(D),XS(c)
- S(b);N_GUARD::R1(F)
- S(b);N_GUARD::R1(F),XS(b)
- Refutation
- B(a);
- Try
- R(F);
- Threat
- QAR1(B)
- Vars
- S(b);N_GUARD::R1(F),XS(b)
- R(f);S_CUTB(a)::R(D),XS(c)
- Refutation
- R(f);N_SPINS(c)
- Try
- R(F);
- Vars
- R(f);N_SPINR(e),XB(E)::QAR1(B)
- R(f);N_SPINS(c)::QAR1(B)
- B(a);N_GUARD::R(D),XS(c)
- S(b);N_GUARD::R1(F)
- S(b);N_GUARD::R1(F),XS(b)
- Refutation
- B(a);
- Try
- Q(B);CHECK
- Vars
- K(d);N_SPINR(e),N_SPINS(c),P-FLIGHT::QAR1(B),XR(e)
- Refutation
- K(d);N_SPINR(e),N_SPINS(c),S_FLIGHT,XQ(B)
- Try
- Q(B);CHECK
- Vars
- K(d);N_SPINR(e),N_SPINS(c),OGATE,P-FLIGHT::QAR1(B),XR(e)
- Refutation
- K(d);N_SPINR(e),P-FLIGHT,P_SPINR(f)
- Try
- Q(B);CHECK,XS(c)
- Vars
- K(d);N_SPINR(e),P-FLIGHT,P_SPINR(f)::QAR1(B)
- Refutation
- B(a);P_SPINB(a),XQ(B)
- Try
- P(A);
- Vars
- R(f);N_SPINR(e),XB(E)::QAR1(B)
- R(f);N_SPINS(c)::QAR1(B)
- B(a);N_GUARD::R(D),XS(c)
- S(b);N_GUARD::R1(F)
- S(b);N_GUARD::R1(F),XS(b)
- Refutation
- B(a);
- Try
- P(A);
- Threat
- QAR1(B)
- Vars
- S(b);N_GUARD::R1(F),XS(b)
- Refutation
- R(f);N_SPINR(e),XB(E)
- Try
- Actual
- K(H);P-FLIGHT
- Threat
- R(F)
- Vars
- S(b);CHECK,N_GUARD::R1(F),XS(b)
- R(f);N_SPINR(e),XB(E)::QAR1(B)
- R(f);N_SPINS(c)::QAR1(B)
- S(b);N_GUARD::R1(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).