MESON Chess Problem Database
Problem Display
PID: 267749 (R1r5/qP2p1nN/1p4p1/4BkNp/p7/1rp1R1PP/Qb5K/7n w - - 0 1)
Lamba, Stelian
Probleemblad, 1985
#2
10 + 13
SOLUTION
- SOUND
- Sets
- 1...Ra3
- 2.Qf7#
- 1...Rb4
- 2.Qf7#
- 1...Rb5
- 2.Qf7#
- 1...Rc4
- 2.Rf8#
- 1...Rc5
- 2.Rf8#
- 1...Rc7
- 2.Rf8#
- 1...Rf8
- 2.Rxf8#
- 1...Ba1
- 2.Qc2#
- 1...Bc1
- 2.Qc2#
- 1...Ba3
- 2.Qc2#
- 1...h4
- 2.g4#
- 1...Ra3
- Tries
- 1.Bd4?
- threat
- 2.Rf3#
- 2.Re5#
- 1...Qxb7
- 2.Re5#
- 1...Sxg3
- 2.Rf3#
- 1...Qa5
- 2.Rf3#
- 1...Rb5
- 2.Rf3#
- 2.Qf7#
- 1...Rc5
- 2.Rf3#
- 2.Rf8#
- 1...Bc1
- 2.Re5#
- 2.Qc2#
- 1...Se6
- 2.Re5#
- 1...c2
- 2.Re5#
- 1...e5
- 2.Rf3#
- 2.Rxe5#
- 1...Qb8!
- threat
- 1.Bc7?
- threat
- 2.Rf3#
- 2.Re5#
- 1...Qxb7
- 2.Re5#
- 1...Rxc7
- 2.Rf8#
- 1...Sxg3
- 2.Rf3#
- 1...Qa5
- 2.Rf3#
- 1...Rb4
- 2.Re5#
- 2.Qf7#
- 1...Rb5
- 2.Rf3#
- 2.Qf7#
- 1...Bc1
- 2.Re5#
- 2.Qc2#
- 1...Se6
- 2.Re5#
- 1...e5
- 2.Rf3#
- 2.Rxe5#
- 1...c2!
- threat
- 1.Qxb3?
- threat
- 2.Qc2#
- 2.Qf7#
- 1...Qxb7
- 2.Qf7#
- 1...Sxg3
- 2.Qf7#
- 1...Qa6
- 2.Qf7#
- 1...Rc4
- 2.Rf8#
- 1...Rc6
- 2.Qc2#
- 1...Rd8
- 2.Qf7#
- 1...Rf8
- 2.Rxf8#
- 2.Qc2#
- 1...Sf2
- 2.Qf7#
- 1...Se6
- 2.Qc2#
- 2.Qxe6#
- 1...Se8
- 2.Qc2#
- 2.Qe6#
- 1...c2
- 2.Qf7#
- 2.Qd3#
- 1...e6
- 2.Qc2#
- 1...axb3!
- threat
- 1.bxc8Q+?
- 1...Qd7
- 2.Qf8#
- 1...Se6
- 2.Qxe6#
- 1...e6!
- 1...Qd7
- 1.Bd4?
- Keys
- 1.Bxc3!
- threat
- 2.Rf3#
- 2.Re5#
- 2.Qb1#
- 1...Qxb7
- 2.Re5#
- 1...Rbxc3
- 2.Qf7#
- 1...Rcxc3
- 2.Rf8#
- 1...Bxc3
- 2.Qc2#
- 1...Sxg3
- 2.Rf3#
- 1...Qb8
- 2.Qb1#
- 1...Qa5
- 2.Rf3#
- 2.Qb1#
- 1...Qa6
- 2.Rf3#
- 2.Re5#
- 1...Rb4
- 2.Re5#
- 2.Qf7#
- 1...Rb5
- 2.Rf3#
- 2.Qb1#
- 2.Qf7#
- 1...Rc4
- 2.Re5#
- 2.Rf8#
- 1...Rc5
- 2.Rf3#
- 2.Rf8#
- 2.Qb1#
- 1...Rd8
- 2.Rf3#
- 2.Re5#
- 1...Ba1
- 2.Rf3#
- 2.Re5#
- 2.Qc2#
- 1...Bc1
- 2.Re5#
- 2.Qc2#
- 1...Ba3
- 2.Rf3#
- 2.Re5#
- 2.Qc2#
- 1...Sf2
- 2.Rf3#
- 2.Re5#
- 1...Se6
- 2.Re5#
- 2.Qb1#
- 1...e5
- 2.Rf3#
- 2.Rxe5#
- threat
- 1.Bxc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 11
- Sets
- R(c);OGATE::QAR2(A)
- R(m);OGATE::R(J)
- R(m);OGATE::R(J),XR(m)
- B(b);OGATE::QAB(A)
- P(g);N_GUARD::P(D)
- Tries
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- Q(j);XP(H)::R1(C)
- S(a);XP(D)::R(C)
- Q(j);::R(C)
- S(l);::R1(C)
- P(d);::R1(C)
- Refutation
- Q(j);P_PINP(D)
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- Q(j);XP(H)::R1(C)
- R(m);OGATE,XB(F)::R(J)
- S(a);XP(D)::R(C)
- Q(j);::R(C)
- S(l);::R1(C)
- Refutation
- P(d);
- Try
- Q(A);XR(c)
- Threat
- DUALS(2)
- Vars
- Q(j);XP(H)::QAR2(A)
- S(a);XP(D)::QAR2(A)
- Q(j);::QAR2(A)
- R(m);OGATE::R(J)
- R(m);::QAB(A)
- R(m);::QAR2(A)
- S(a);::QAR2(A)
- P(k);::QAB(A)
- Refutation
- P(e);XQ(A)
- Try
- P(H);CHECK,XR(m)
- Vars
- Q(j);P_SPINQ(j)::QAR(H)
- S(l);N_GUARD,P_SPINS(l)::QAB1(H),XS(l)
- Refutation
- P(k);P_SPINP(k)
- Try
- Actual
- B(F);XP(d)
- Threat
- DUALS(3)
- Vars
- Q(j);XP(H)::R1(C)
- R(c);OGATE,XB(F)::QAR2(A)
- R(m);OGATE,XB(F)::R(J)
- B(b);OGATE,XB(F)::QAB(A)
- S(a);XP(D)::R(C)
- Q(j);P_PINP(D)::QAB(A)
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).