MESON Chess Problem Database
Problem Display
PID: 259376 (8/p1p3KQ/Rb4NP/2PP1kr1/2NR2rB/3n3B/8/3n4 w - - 0 1)
Murarasu, Ion
2nd Prize, Scacchi e Scienze Applicate, 1990
#2
11 + 8
| 15601 | Albrecht-Leiss-Degener Collection | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Rh5
- 2.Bxg4#
- 1...Rxg6+
- 2.Qxg6#
- 1...Ba5
- 2.Rf6#
- 1...Bxc5
- 2.Rf6#
- 1...S1b2
- 2.Se3#
- 1...S1f2
- 2.Se3#
- 1...Sc3
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sc1
- 2.Rf4#
- 1...Se1
- 2.Rf4#
- 1...S3b2
- 2.Rf4#
- 1...S3f2
- 2.Rf4#
- 1...Sb4
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sxc5
- 2.Rf4#
- 1...Se5
- 2.Rf4#
- 1...c6
- 2.Sd6#
- 1...Rh5
- Tries
- 1.Kf7?
- threat
- 2.Se7#
- 1...Rxg6
- 2.Bxg4#
- 2.Qxg6#
- 1...Se5+!
- threat
- 1.Kg8?
- threat
- 2.Qf7#
- 1...Kf6
- 2.Qf7#
- 1...Se5
- 2.Rf4#
- 1...Rxg6+!
- threat
- 1.Kh8?
- threat
- 2.Qf7#
- 1...Rxg6
- 2.Bxg4#
- 1...Se5
- 2.Rf4#
- 1...Kf6!
- threat
- 1.Be1?
- 1...Rxg6+
- 2.Qxg6#
- 1...Bxc5
- 2.Rf6#
- 1...Sxe1
- 2.Rf4#
- 1...Sxc5
- 2.Rf4#
- 1...S1b2
- 2.Se3#
- 1...Ba5
- 2.Rf6#
- 1...S1f2
- 2.Se3#
- 1...Sc3
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sc1
- 2.Rf4#
- 1...S3b2
- 2.Rf4#
- 1...S3f2
- 2.Rf4#
- 1...Sb4
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Se5
- 2.Rf4#
- 1...c6
- 2.Sd6#
- 1...Rh5!
- 1...Rxg6+
- 1.Bf2?
- 1...Rxg6+
- 2.Qxg6#
- 1...Bxc5
- 2.Rf6#
- 1...S1xf2
- 2.Se3#
- 1...S3xf2
- 2.Rf4#
- 1...Sxc5
- 2.Rf4#
- 1...S1b2
- 2.Se3#
- 1...Ba5
- 2.Rf6#
- 1...Sc3
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sc1
- 2.Rf4#
- 1...Se1
- 2.Rf4#
- 1...S3b2
- 2.Rf4#
- 1...Sb4
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Se5
- 2.Rf4#
- 1...c6
- 2.Sd6#
- 1...Rh5!
- 1...Rxg6+
- 1.Bg3?
- 1...Rxg6+
- 2.Qxg6#
- 1...Bxc5
- 2.Rf6#
- 1...Sxc5
- 2.Rf4#
- 1...S1b2
- 2.Se3#
- 1...Ba5
- 2.Rf6#
- 1...S1f2
- 2.Se3#
- 1...Sc3
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sc1
- 2.Rf4#
- 1...Se1
- 2.Rf4#
- 1...S3b2
- 2.Rf4#
- 1...S3f2
- 2.Rf4#
- 1...Sb4
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Se5
- 2.Rf4#
- 1...c6
- 2.Sd6#
- 1...Rh5!
- 1...Rxg6+
- 1.Rxg4?
- threat
- 2.Rf4#
- 1...Rxg6+
- 2.Qxg6#
- 1...Sf4
- 2.Rxf4#
- 1...Rxg4!
- threat
- 1.Rxb6?
- threat
- 2.Rf6#
- 1...Rxg6+
- 2.Qxg6#
- 1...cxb6
- 2.Sd6#
- 1...c6
- 2.Sd6#
- 1...axb6!
- threat
- 1.Qg8?
- threat
- 2.Qe6#
- 2.Qf7#
- 2.Qc8#
- 2.Qf8#
- 1...Bxc5
- 2.Rf6#
- 2.Qe6#
- 2.Qf7#
- 2.Qc8#
- 1...Sxc5
- 2.Rf4#
- 2.Qf7#
- 2.Qf8#
- 1...Sf4
- 2.Rxf4#
- 2.Qf7#
- 2.Qf8#
- 1...Se5
- 2.Rf4#
- 2.Qe6#
- 1...Rxg6+!
- threat
- 1.Qh8?
- threat
- 2.Qc8#
- 2.Qf8#
- 1...Bxc5
- 2.Rf6#
- 2.Qc8#
- 1...Sxc5
- 2.Rf4#
- 2.Qf8#
- 1...Sf4
- 2.Rxf4#
- 2.Qf8#
- 1...Se5
- 2.Rf4#
- 1...Rxg6+!
- threat
- 1.cxb6?
- 1...Rxg6+
- 2.Qxg6#
- 1...cxb6
- 2.Sd6#
- 1...S1b2
- 2.Se3#
- 1...Rh5
- 2.Bxg4#
- 1...S1f2
- 2.Se3#
- 1...Sc3
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sc1
- 2.Rf4#
- 1...Se1
- 2.Rf4#
- 1...S3b2
- 2.Rf4#
- 1...S3f2
- 2.Rf4#
- 1...Sb4
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sc5
- 2.Rf4#
- 1...Se5
- 2.Rf4#
- 1...c5
- 2.Sd6#
- 1...c6
- 2.Sd6#
- 1...axb6!
- 1...Rxg6+
- 1.Kf7?
- Keys
- 1.Kf8!
- threat
- 2.Qf7#
- 1...Bxc5+
- 2.Se7#
- 1...Kf6
- 2.Qf7#
- 1...Rxg6
- 2.Bxg4#
- 1...Se5
- 2.Rf4#
- threat
- 1.Kf8!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 14
- Sets
- R(e);N_GUARD::B(A),XR(c)
- R(e);CHECK,OGATE,XS(H)::QAB1(K),XR(e)
- B(f);OGATE::R1(G)
- B(f);OGATE,XP(E)::R1(G)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(b);N_GUARD::R1(C)
- S(b);N_GUARD::R1(C),XS(b)
- S(b);N_GUARD,XP(E)::R1(C)
- P(h);N_GUARD::S(B)
- Tries
- Try
- K(J);N_SPINS(H),P-FLIGHT
- Threat
- QAB(K)+S(H),DCHECK
- Refutation
- S(b);CHECK
- Try
- K(J);P-FLIGHT
- Threat
- QAR2(K)
- Vars
- K(d);N_SPINR(c),P-FLIGHT,P_SPINB(f),P_SPINR(e)::QAR1(K)
- S(b);N_GUARD::R1(C)
- Refutation
- R(e);CHECK,XS(H)
- Try
- K(J);N_SPINS(H),S_FLIGHT
- Threat
- QAR2(K)
- Vars
- R(e);N_GUARD,XS(H)::B(A),XR(c)
- S(b);N_GUARD::R1(C)
- Refutation
- K(d);N_SPINR(c),P-FLIGHT,P_SPINB(f),P_SPINR(e)
- Try
- B(D);
- Vars
- R(e);CHECK,OGATE,XS(H)::QAB1(K),XR(e)
- B(f);OGATE,XP(E)::R1(G)
- S(b);N_GUARD,XB(D)::R1(C)
- S(b);N_GUARD,XP(E)::R1(C)
- S(a);N_GUARD::S(B)
- B(f);OGATE::R1(G)
- S(a);N_GUARD::S(B),XS(a)
- S(b);N_GUARD::R1(C)
- S(b);N_GUARD::R1(C),XS(b)
- P(h);N_GUARD::S(B)
- Refutation
- R(e);
- Try
- B(D);
- Vars
- R(e);CHECK,OGATE,XS(H)::QAB1(K),XR(e)
- B(f);OGATE,XP(E)::R1(G)
- S(a);N_GUARD,XB(D)::S(B)
- S(b);N_GUARD,XB(D)::R1(C)
- S(b);N_GUARD,XP(E)::R1(C)
- S(a);N_GUARD::S(B)
- B(f);OGATE::R1(G)
- S(a);N_GUARD::S(B),XS(a)
- S(b);N_GUARD::R1(C)
- S(b);N_GUARD::R1(C),XS(b)
- P(h);N_GUARD::S(B)
- Refutation
- R(e);
- Try
- B(D);
- Vars
- R(e);CHECK,OGATE,XS(H)::QAB1(K),XR(e)
- B(f);OGATE,XP(E)::R1(G)
- S(b);N_GUARD,XP(E)::R1(C)
- S(a);N_GUARD::S(B)
- B(f);OGATE::R1(G)
- S(a);N_GUARD::S(B),XS(a)
- S(b);N_GUARD::R1(C)
- S(b);N_GUARD::R1(C),XS(b)
- P(h);N_GUARD::S(B)
- Refutation
- R(e);
- Try
- R(C);XR(c)
- Threat
- B(A)+R(C),DCHECK
- Vars
- R(e);CHECK,OGATE,P_SPINR(e),XS(H)::QAB1(K),XR(e)
- S(b);::B(A)+R(C),DCHECK,XS(b)
- Refutation
- R(e);P_SPINR(e),XR(C)
- Try
- R(G);XB(f)
- Threat
- R1(G)
- Vars
- R(e);CHECK,OGATE,XS(H)::QAB1(K),XR(e)
- P(h);N_GUARD,XR(G)::S(B)
- P(h);N_GUARD::S(B)
- Refutation
- P(g);XR(G)
- Try
- Q(K);
- Threat
- DUALS(4)
- Refutation
- R(e);CHECK,XS(H)
- Try
- Q(K);
- Threat
- DUALS(2)
- Vars
- S(b);N_GUARD::R1(C)
- Refutation
- R(e);CHECK,XS(H)
- Try
- P(E);XB(f)
- Vars
- R(e);CHECK,OGATE,XS(H)::QAB1(K),XR(e)
- P(h);N_GUARD,XP(E)::S(B)
- S(a);N_GUARD::S(B)
- R(e);N_GUARD::B(A),XR(c)
- S(a);N_GUARD::S(B),XS(a)
- S(b);N_GUARD::R1(C)
- S(b);N_GUARD::R1(C),XS(b)
- P(h);N_GUARD::S(B)
- Refutation
- P(g);XP(E)
- Try
- Actual
- K(J);N_SPINS(H),S_FLIGHT
- Threat
- QAR2(K)
- Vars
- B(f);CHECK,XP(E)::QAB(K)+S(H),DCHECK
- K(d);N_SPINR(c),P-FLIGHT,P_SPINB(f),P_SPINR(e)::QAR1(K)
- R(e);N_GUARD,XS(H)::B(A),XR(c)
- S(b);N_GUARD::R1(C)
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).