MESON Chess Problem Database
Problem Display
PID: 67011 (2Bb4/6P1/5r2/pR4Pq/K2B1kpp/4NP2/8/2nN1QR1 w - - 0 1)
Pachl, Franz
Troll, 2001
#2
11 + 8
SOLUTION
- SOUND
- Sets
- 1...Qg6
- 2.Rxg4#
- 1...Qf7
- 2.Rxg4#
- 1...Qe8
- 2.Rxg4#
- 1...Qh6
- 2.Rxg4#
- 1...Qh7
- 2.Rxg4#
- 1...Qh8
- 2.Rxg4#
- 1...Rf5
- 2.Rxf5#
- 1...Ra6
- 2.Rf5#
- 1...Rb6
- 2.Rf5#
- 1...Rc6
- 2.Rf5#
- 1...Rd6
- 2.Rf5#
- 1...Re6
- 2.Rf5#
- 1...Rg6
- 2.Rf5#
- 1...Rh6
- 2.Rf5#
- 1...g3
- 2.Sg2#
- 1...Qg6
- Tries
- 1.Bxf6?
- threat
- 2.Sd5#
- 2.Rf5#
- 1...Bxf6
- 2.Rf5#
- 1...gxf3
- 2.Qc4#
- 1...Qg6
- 2.Sd5#
- 2.Rxg4#
- 1...Qf7
- 2.Rxg4#
- 2.Rf5#
- 1...Qe8
- 2.Sd5#
- 2.Rxg4#
- 1...Qh7
- 2.Sd5#
- 2.Rxg4#
- 1...Qxg5!
- threat
- 1.Bb7?
- threat
- 2.fxg4#
- 1...gxf3
- 2.Be5#
- 1...Rf5
- 2.Rxf5#
- 1...Rc6
- 2.Rf5#
- 1...g3
- 2.Sg2#
- 1...Sd3!
- threat
- 1.Re5?
- threat
- 2.Sd5#
- 2.fxg4#
- 1...gxf3
- 2.Sd5#
- 1...Rf5
- 2.Rxf5#
- 1...Qf7
- 2.Rxg4#
- 2.fxg4#
- 1...Rd6
- 2.Rf5#
- 2.fxg4#
- 1...Sd3
- 2.Sd5#
- 1...g3
- 2.Sg2#
- 2.Sd5#
- 1...Qe8+!
- threat
- 1.Qf2?
- threat
- 2.Sg2#
- 1...Rf5
- 2.Rxf5#
- 1...h3
- 2.Qg3#
- 1...gxf3!
- threat
- 1.g8Q?
- threat
- 2.Sd5#
- 2.Be5#
- 1...Qxg5
- 2.Qxg5#
- 1...Qg6
- 2.Rxg4#
- 1...Qf7
- 2.Be5#
- 2.Rxg4#
- 1...Qe8
- 2.Sd5#
- 2.Rxg4#
- 1...Rf5
- 2.Rxf5#
- 1...Rd6
- 2.Be5#
- 2.Rf5#
- 1...Re6
- 2.Rf5#
- 1...Rg6
- 2.Rf5#
- 1...Bc7
- 2.Sd5#
- 1...Sd3
- 2.Sd5#
- 1...gxf3!
- threat
- 1.Bxf6?
- Keys
- 1.Sc3!
- threat
- 2.fxg4#
- 1...gxf3
- 2.Sed5#
- 1...Rf5
- 2.Rxf5#
- 1...Sd3
- 2.Se2#
- 1...g3
- 2.Sg2#
- threat
- 1.Sc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 13
- Sets
- Q(f);N_GUARD::R1(C),XP(c)
- Q(f);N_GUARD,P_PINR(H)::R1(C),XP(c)
- R(g);N_GUARD::R1(H),XR(g)
- R(g);N_GUARD::R1(H)
- P(c);SBLOCK::S(D)
- Tries
- Try
- B(G);XR(g)
- Threat
- DUALS(2)
- Vars
- B(h);XB(G)::R1(H)
- P(c);P_SPINP(c),SBLOCK,XP(E)::QAR(B)
- Refutation
- Q(f);XP(I)
- Try
- B(K);
- Threat
- QAR(B)+P(E),XP(c)
- Vars
- P(c);P_SPINP(c),XP(E)::B(G)
- R(g);N_GUARD::R1(H),XR(g)
- R(g);N_GUARD::R1(H)
- P(c);SBLOCK::S(D)
- Refutation
- S(a);
- Try
- R(H);
- Threat
- DUALS(2)
- Vars
- P(c);P_SPINP(c),XP(E)::S(D)
- R(g);N_GUARD::R1(H),XR(g)
- S(a);::S(D)
- Refutation
- Q(f);CHECK
- Try
- Q(B);
- Threat
- S(D)
- Vars
- R(g);N_GUARD::R1(H),XR(g)
- P(d);N_GUARD::QAB1(B)
- Refutation
- P(c);P_SPINP(c),XP(E)
- Try
- P(J);
- Threat
- DUALS(2)
- Vars
- Q(f);OGATE,XP(I)::QAB1(J),XQ(f)
- Q(f);N_GUARD::R1(C),XP(c)
- R(g);N_GUARD::R1(H),XR(g)
- R(g);N_GUARD::R1(H)
- B(h);::S(D)
- S(a);::S(D)
- Refutation
- P(c);P_SPINP(c),XP(E)
- Try
- Actual
- S(A);
- Threat
- QAR(B)+P(E),XP(c)
- Vars
- P(c);P_SPINP(c),XP(E)::S(D)
- R(g);N_GUARD::R1(H),XR(g)
- S(a);N_GUARD::S(A)
- P(c);SBLOCK::S(D)
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).