MESON Chess Problem Database
Problem Display
PID: 254520 (2BBR3/pp1N3n/brpk4/1p4p1/1Np3Kp/5Q2/3p4/8 w - - 0 1)
Berlingozzo, Engelberto
Sonnenfeld, Felix Alexander
Probleemblad, 1983
#2
7 + 12
SOLUTION
- SOUND
- Sets
- 1...Sf6+
- 2.Qxf6#
- 1...Sf8
- 2.Qxf8#
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...c3
- 2.Qd3#
- 1...h3
- 2.Qg3#
- 1...c5
- 2.Qd5#
- 1...Sf6+
- Tries
- 1.Kh3?
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...Sf6
- 2.Qxf6#
- 1...Sf8
- 2.Qxf8#
- 1...c3
- 2.Qd3#
- 1...c5
- 2.Qd5#
- 1...g4+!
- 1...d1Q
- 1.Bxg5?
- threat
- 2.Bf4#
- 2.Qf4#
- 1...Kc7
- 2.Bf4#
- 2.Qf4#
- 1...Sxg5
- 2.Qf4#
- 1...d1Q
- 2.Bf4#
- 1...d1B
- 2.Bf4#
- 1...Sf6+!
- threat
- 1.Bxb6?
- 1...Sf6+
- 2.Qxf6#
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...Sf8
- 2.Qxf8#
- 1...c3
- 2.Qd3#
- 1...h3
- 2.Qg3#
- 1...c5
- 2.Qd5#
- 1...axb6!
- 1...Sf6+
- 1.Bf6?
- threat
- 2.Be5#
- 1...Kc7
- 2.Be5#
- 1...Sxf6+!
- threat
- 1.Be7+?
- 1...Ke6
- 2.Bc5#
- 2.Bf8#
- 2.Qf5#
- 1...Kc7!
- 1...Ke6
- 1.Re3?
- 1...Sf6+
- 2.Qxf6#
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...Sf8
- 2.Qxf8#
- 1...h3
- 2.Qg3#
- 1...c5
- 2.Qd5#
- 1...c3!
- 1...Sf6+
- 1.Re4?
- 1...Sf6+
- 2.Qxf6#
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...Sf8
- 2.Qxf8#
- 1...c3
- 2.Qd3#
- 1...h3
- 2.Qg3#
- 1...c5!
- 1...Sf6+
- 1.Re5?
- 1...Sf6+
- 2.Qxf6#
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...Sf8
- 2.Qxf8#
- 1...c3
- 2.Qd3#
- 1...c5
- 2.Qd5#
- 1...h3!
- 1...Sf6+
- 1.Re7?
- 1...Sf6+
- 2.Qxf6#
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...c3
- 2.Qd3#
- 1...h3
- 2.Qg3#
- 1...c5
- 2.Qd5#
- 1...Sf8!
- 1...Sf6+
- 1.Qh1?
- threat
- 2.Qh2#
- 1...d1Q+
- 2.Qxd1#
- 1...d1B+
- 2.Qxd1#
- 1...Sf6+!
- threat
- 1.Qe2?
- threat
- 2.Re6#
- 2.Qxd2#
- 2.Qh2#
- 2.Qe5#
- 2.Qe6#
- 2.Qe7#
- 1...d1Q
- 2.Re6#
- 2.Qxd1#
- 1...d1S
- 2.Re6#
- 2.Qxd1#
- 2.Qd2#
- 2.Qh2#
- 2.Qe5#
- 2.Qe6#
- 2.Qe7#
- 1...d1B
- 2.Re6#
- 2.Qxd1#
- 1...d1R
- 2.Re6#
- 2.Qxd1#
- 2.Qh2#
- 2.Qe5#
- 2.Qe6#
- 2.Qe7#
- 1...Sf8
- 2.Qxd2#
- 2.Qh2#
- 2.Qe5#
- 2.Qe7#
- 1...c3
- 2.Re6#
- 2.Qd3#
- 2.Qh2#
- 2.Qe5#
- 2.Qe6#
- 2.Qe7#
- 1...Sf6+!
- threat
- 1.Kh3?
- Keys
- 1.Kh5!
- 1...Sf6+
- 2.Qxf6#
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...Sf8
- 2.Qxf8#
- 1...c3
- 2.Qd3#
- 1...h3
- 2.Qg3#
- 1...g4
- 2.Qf4#
- 1...c5
- 2.Qd5#
- 1...Sf6+
- 1.Kh5!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- S(l);CHECK,N_GUARD::QAR2(A),XS(l)
- S(l);N_GUARD::QAB(A),XS(l)
- P(a);OGATEB,P_PINQ(A)::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XS(a)
- P(a);OGATEB,P_PINQ(A)::QAR(A),XB(a)
- P(a);OGATEB::QAR(A),XR(a)
- P(b);N_GUARD::QAR(A)
- P(c);N_GUARD::QAB(A)
- P(h);N_GUARD::QAR1(A)
- Tries
- Try
- K(C);S_FLIGHT
- Vars
- P(a);OGATEB::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XS(a)
- P(a);OGATEB::QAR(A),XB(a)
- P(a);OGATEB::QAR(A),XR(a)
- S(l);N_GUARD::QAR2(A),XS(l)
- S(l);N_GUARD::QAB(A),XS(l)
- P(b);N_GUARD::QAR(A)
- P(h);N_GUARD::QAR1(A)
- Refutation
- P(e);CHECK
- Try
- B(F);XP(e)
- Threat
- DUALS(2)
- Vars
- S(l);XB(F)::QAB(A)
- P(a);P_PINQ(A)::B(F)
- Refutation
- S(l);CHECK
- Try
- B(F);XR(g)
- Vars
- S(l);CHECK,N_GUARD::QAR2(A),XS(l)
- P(a);OGATEB,P_PINQ(A)::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XS(a)
- P(a);OGATEB,P_PINQ(A)::QAR(A),XB(a)
- P(a);OGATEB::QAR(A),XR(a)
- S(l);N_GUARD::QAB(A),XS(l)
- P(b);N_GUARD::QAR(A)
- P(c);N_GUARD::QAB(A)
- P(h);N_GUARD::QAR1(A)
- Refutation
- P(j);XB(F)
- Try
- B(F);
- Threat
- B(F)
- Vars
- K(i);S_FLIGHT::B(F)
- Refutation
- S(l);CHECK,XB(F)
- Try
- B(F);CHECK
- Refutation
- K(i);S_FLIGHT
- Try
- R(G);
- Vars
- S(l);CHECK,N_GUARD::QAR2(A),XS(l)
- P(a);OGATEB,P_PINQ(A)::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XS(a)
- P(a);OGATEB,P_PINQ(A)::QAR(A),XB(a)
- P(a);OGATEB::QAR(A),XR(a)
- S(l);N_GUARD::QAB(A),XS(l)
- P(c);N_GUARD::QAB(A)
- P(h);N_GUARD::QAR1(A)
- Refutation
- P(b);
- Try
- R(G);
- Vars
- S(l);CHECK,N_GUARD::QAR2(A),XS(l)
- P(a);OGATEB,P_PINQ(A)::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XS(a)
- P(a);OGATEB,P_PINQ(A)::QAR(A),XB(a)
- P(a);OGATEB::QAR(A),XR(a)
- S(l);N_GUARD::QAB(A),XS(l)
- P(b);N_GUARD::QAR(A)
- P(c);N_GUARD::QAB(A)
- Refutation
- P(h);
- Try
- R(G);
- Vars
- S(l);CHECK,N_GUARD::QAR2(A),XS(l)
- P(a);OGATEB,P_PINQ(A)::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XS(a)
- P(a);OGATEB,P_PINQ(A)::QAR(A),XB(a)
- P(a);OGATEB::QAR(A),XR(a)
- S(l);N_GUARD::QAB(A),XS(l)
- P(b);N_GUARD::QAR(A)
- P(h);N_GUARD::QAR1(A)
- Refutation
- P(c);
- Try
- R(G);
- Vars
- S(l);CHECK,N_GUARD::QAR2(A),XS(l)
- P(a);OGATEB,P_PINQ(A)::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XS(a)
- P(a);OGATEB,P_PINQ(A)::QAR(A),XB(a)
- P(a);OGATEB::QAR(A),XR(a)
- P(b);N_GUARD::QAR(A)
- P(c);N_GUARD::QAB(A)
- P(h);N_GUARD::QAR1(A)
- Refutation
- S(l);
- Try
- Q(A);
- Threat
- QAB(A)
- Vars
- P(a);CHECK,OGATEB::QAR(A),XQ(a)
- P(a);CHECK,OGATEB::QAR(A),XB(a)
- Refutation
- S(l);CHECK
- Try
- Q(A);
- Threat
- DUALS(6)
- Refutation
- S(l);CHECK
- Try
- Actual
- K(C);S_FLIGHT
- Vars
- S(l);CHECK,N_GUARD::QAR2(A),XS(l)
- P(a);OGATEB,P_PINQ(A)::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XS(a)
- P(a);OGATEB,P_PINQ(A)::QAR(A),XB(a)
- P(a);OGATEB::QAR(A),XR(a)
- S(l);N_GUARD::QAB(A),XS(l)
- P(b);N_GUARD::QAR(A)
- P(c);N_GUARD::QAB(A)
- P(e);N_GUARD::QAB(A)
- P(h);N_GUARD::QAR1(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).