MESON Chess Problem Database
Problem Display
PID: 150830 (8/B3R3/7K/2b5/3Pp2p/Np1k3r/2q2R2/1B1N2Q1 w - - 0 1)
Andreev, Viacheslav Nikolai
Shakhmaty v SSSR, 1982
#2
9 + 7
| 15148 | Sadier Collection | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Kxd4
- 2.Rd2#
- 1...Bxa3
- 2.Qf1#
- 1...Bb4
- 2.Qf1#
- 1...Bxd4
- 2.Qf1#
- 1...Bd6
- 2.Qf1#
- 1...Bxe7
- 2.Qf1#
- 1...Kxd4
- Tries
- 1.Bxc2+?
- 1...Kxd4
- 2.Rd2#
- 1...bxc2!
- 1...Kxd4
- 1.Rd7?
- threat
- 2.Qf1#
- 2.dxc5#
- 1...Bxa3
- 2.Qf1#
- 1...Bxd4
- 2.Rxd4#
- 2.Qf1#
- 1...Bxa7
- 2.Qf1#
- 1...e3
- 2.Qg6#
- 1...Rh1
- 2.dxc5#
- 1...Re3
- 2.dxc5#
- 1...Bb4
- 2.Qf1#
- 1...Bb6
- 2.Qf1#
- 1...Bd6
- 2.Qf1#
- 1...Be7
- 2.Qf1#
- 1...Bf8+!
- threat
- 1.Qe1?
- threat
- 2.Rd2#
- 2.Qd2#
- 2.Qc3#
- 2.Qxe4#
- 1...Bxa3
- 2.Qc3#
- 2.Qf1#
- 2.Qe2#
- 1...Bxd4
- 2.Rd2#
- 2.Qd2#
- 2.Qf1#
- 2.Qe2#
- 2.Qxe4#
- 1...Bxe7
- 2.Sb2#
- 2.Rd2#
- 2.Qd2#
- 2.Qc3#
- 2.Qf1#
- 2.Qe2#
- 1...Rh2
- 2.Qd2#
- 2.Qc3#
- 2.Qe3#
- 2.Qxe4#
- 1...Re3
- 2.Rd2#
- 2.Qd2#
- 2.Qc3#
- 2.Qxe3#
- 1...Bb4
- 2.Sb2#
- 2.Qf1#
- 2.Qe2#
- 2.Qxe4#
- 1...e3
- 2.Qc3#
- 1...Kxd4!
- threat
- 1.Qg2?
- threat
- 2.Rd2#
- 2.Qxe4#
- 1...Bxa3
- 2.Qf1#
- 1...Bxe7
- 2.Rd2#
- 2.Qf1#
- 1...Re3
- 2.Rd2#
- 1...Rf3
- 2.Rd2#
- 1...Bb4
- 2.Qf1#
- 2.Qxe4#
- 1...e3
- 2.Qe4#
- 1...Kxd4!
- threat
- 1.Qg4?
- threat
- 2.Qxe4#
- 1...Kxd4
- 2.Qd7#
- 1...Bxa3
- 2.Qe2#
- 1...Bxe7
- 2.Qe2#
- 1...e3
- 2.Qe4#
- 1...Re3!
- threat
- 1.Qg5?
- threat
- 2.Rd2#
- 2.Qd2#
- 1...Kxd4
- 2.Rd7#
- 1...Bxa3
- 2.Qb5#
- 1...Rh2
- 2.Qd2#
- 2.Qe3#
- 1...Re3
- 2.Qxe3#
- 1...Bb4
- 2.Qb5#
- 1...e3!
- threat
- 1.Qg6?
- threat
- 2.Qxe4#
- 1...Kxd4
- 2.Qd6#
- 1...Bxa3
- 2.Qa6#
- 1...Bxe7
- 2.Qa6#
- 1...Re3!
- threat
- 1.dxc5?
- threat
- 2.Rd7#
- 1...Kd4
- 2.Rd2#
- 1...e3!
- threat
- 1.Bxc2+?
- Keys
- 1.Qg8!
- threat
- 2.Qc4#
- 1...Kxd4
- 2.Qd8#
- 1...Bxa3
- 2.Qxb3#
- threat
- 1.Qg8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 4
- Sets
- K(c);N_SPINQ(a),P-FLIGHT,P_SPINB(g),XP(F)::QAB(C)+R(D),DCHECK
- B(g);XS(E)::QAB(C)
- B(g);::QAB(C)
- B(g);XP(F)::QAB(C)
- B(g);XR(I)::QAB(C)
- Tries
- Try
- B(A);CHECK,XQ(a)
- Vars
- K(c);P-FLIGHT,P_SPINB(g),XP(F)::QAB(C)+R(D),DCHECK
- Refutation
- P(b);XB(A)
- Try
- R(I);
- Threat
- DUALS(2)
- Vars
- B(g);XS(E)::QAB(C)
- B(g);XB(H)::QAB(C)
- P(e);OGATEB::QAB(C)
- R(d);::R(I)+P(F),XB(g)
- B(g);::QAB(C)
- Refutation
- B(g);CHECK
- Try
- Q(C);
- Threat
- DUALS(4)
- Vars
- P(e);::QAR1(C)
- Refutation
- K(c);N_SPINQ(a),P-FLIGHT,P_SPINB(g),XP(F)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- B(g);XS(E)::QAB(C)
- R(d);::R1(D)
- P(e);::QAB1(C)
- Refutation
- K(c);N_SPINQ(a),P-FLIGHT,P_SPINB(g),XP(F)
- Try
- Q(C);
- Threat
- QAB1(C),XP(e)
- Vars
- K(c);N_SPINQ(a),OGATEB,P-FLIGHT,P_SPINB(g),P_SPINP(e),XP(F)::QAR(C)
- B(g);XS(E)::QAB1(C)
- B(g);XR(I)::QAB1(C)
- P(e);::QAB1(C)
- Refutation
- R(d);
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- K(c);N_SPINQ(a),OGATEB,P-FLIGHT,P_SPINB(g),XP(F)::R(I)
- B(g);OGATE,XS(E)::QAB(C)
- R(d);N_GUARD::QAR1(C),XR(d)
- B(g);OGATE::QAB(C)
- Refutation
- P(e);
- Try
- Q(C);P_PINP(e)
- Threat
- QAB1(C),XP(e)
- Vars
- K(c);N_SPINP(e),N_SPINQ(a),OGATEB,P-FLIGHT,P_SPINB(g),XP(F)::QAR2(C)
- B(g);XS(E)::QAB(C)
- B(g);XR(I)::QAB(C)
- Refutation
- R(d);
- Try
- P(F);XB(g)
- Threat
- R(I)
- Vars
- K(c);N_SPINQ(a),P-FLIGHT::QAB(C)+R(D),DCHECK
- Refutation
- P(e);
- Try
- Actual
- Q(C);
- Threat
- QAB1(C)
- Vars
- K(c);N_SPINQ(a),OGATEB,P-FLIGHT,P_SPINB(g),XP(F)::QAR(C)
- B(g);XS(E)::QAR2(C),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).