MESON Chess Problem Database
Problem Display
PID: 1007 (2N2R2/2N3KB/1P6/1pB1k3/6PR/4p3/1bn1Q3/4n2q w - - 0 1)
Petite, Efren
The Problemist Supplement, 1996
#2
10 + 7
SOLUTION
- SOUND
- Sets
- 1...Qg2
- 2.Rh5#
- 1...Qd5
- 2.Rh5#
- 2.Qh2#
- 1...Qc6
- 2.Rh5#
- 2.Qh2#
- 1...Qb7
- 2.Rh5#
- 2.Qh2#
- 1...Qa8
- 2.Rh5#
- 2.Qh2#
- 1...Qg1
- 2.Rh5#
- 1...Qh2
- 2.Qxh2#
- 1...Bd4
- 2.Bd6#
- 1...Sa1
- 2.Qxb2#
- 1...Sa3
- 2.Qxb2#
- 1...Sb4
- 2.Qxb2#
- 1...Sd4
- 2.Bd6#
- 1...Qg2
- Tries
- 1.Bxe3?
- threat
- 2.Re8#
- 1...Qxh4
- 2.Qxb5#
- 1...Sxe3
- 2.Qxb2#
- 1...Qd5
- 2.Rh5#
- 2.Qh2#
- 1...Qc6
- 2.Rh5#
- 2.Qh2#
- 1...Sd4
- 2.Bf4#
- 1...Ba3!
- threat
- 1.Rxh1?
- threat
- 2.Rh5#
- 2.Qh2#
- 1...Sg2
- 2.Rh5#
- 1...Sd3
- 2.Rh5#
- 1...Sd4
- 2.Bd6#
- 2.Qh2#
- 2.Qxe3#
- 1...Sf3!
- threat
- 1.Rh6?
- threat
- 2.Re6#
- 1...Qd5
- 2.Rh5#
- 2.Qh2#
- 1...Qc6
- 2.Rh5#
- 2.Qh2#
- 1...Sd4
- 2.Bd6#
- 1...Qxh6+!
- threat
- 1.Qd1?
- threat
- 2.Bd6#
- 2.Qd6#
- 1...Qd5
- 2.Rh5#
- 2.Qxd5#
- 1...Qc6
- 2.Rh5#
- 1...Ba3
- 2.Qd6#
- 1...Bd4
- 2.Bd6#
- 1...Sd4
- 2.Bd6#
- 1...Sd3!
- threat
- 1.Qd3?
- threat
- 2.Bd6#
- 2.Rf5#
- 2.Qf5#
- 2.Qd6#
- 1...Qf3
- 2.Bd6#
- 2.Qd6#
- 1...Qe4
- 2.Bd6#
- 2.Qxe4#
- 2.Qd6#
- 1...Qd5
- 2.Rh5#
- 2.Rf5#
- 2.Qf5#
- 2.Qxd5#
- 1...Qc6
- 2.Rh5#
- 2.Rf5#
- 2.Qf5#
- 1...Qf1
- 2.Bd6#
- 2.Qe4#
- 2.Qd5#
- 2.Qd6#
- 1...Ba3
- 2.Rf5#
- 2.Qf5#
- 2.Qd6#
- 1...Bd4
- 2.Bd6#
- 2.Rf5#
- 2.Qf5#
- 1...Sd4
- 2.Bd6#
- 1...Sxd3!
- threat
- 1.Qc4?
- threat
- 2.Bd6#
- 2.Rf5#
- 2.Re8#
- 2.Qe6#
- 2.Qf4#
- 1...Qxh4
- 2.Bd6#
- 2.Rf5#
- 2.Qd5#
- 2.Qe6#
- 2.Qe4#
- 2.Qf4#
- 1...Qf3
- 2.Bd6#
- 2.Re8#
- 2.Qe6#
- 1...Qe4
- 2.Bd6#
- 2.Qe6#
- 2.Qxe4#
- 1...Qd5
- 2.Rh5#
- 2.Rf5#
- 2.Qxd5#
- 2.Qf4#
- 1...Qc6
- 2.Rh5#
- 2.Rf5#
- 2.Qf4#
- 1...Qf1
- 2.Bd6#
- 2.Re8#
- 2.Qd5#
- 2.Qe6#
- 2.Qe4#
- 1...Qh2
- 2.Bd6#
- 2.Rf5#
- 2.Re8#
- 2.Qd5#
- 2.Qe6#
- 2.Qe4#
- 1...Ba3
- 2.Rf5#
- 2.Re8#
- 2.Qe6#
- 2.Qf4#
- 1...Bd4
- 2.Bd6#
- 2.Qe6#
- 1...Sg2
- 2.Bd6#
- 2.Rf5#
- 2.Re8#
- 2.Qd5#
- 2.Qe6#
- 2.Qe4#
- 1...Sd3
- 2.Bd6#
- 2.Rf5#
- 2.Re8#
- 2.Qe6#
- 1...Sd4
- 2.Bd6#
- 1...bxc4!
- threat
- 1.Qg2?
- threat
- 2.Rf5#
- 2.Qg3#
- 1...Qxg2
- 2.Rh5#
- 1...Qxh4
- 2.Rf5#
- 2.Qe4#
- 2.Qd5#
- 1...Qf1
- 2.Qe4#
- 2.Qd5#
- 1...Qg1
- 2.Rh5#
- 2.Rf5#
- 2.Qe4#
- 2.Qd5#
- 1...Qh2
- 2.Rf5#
- 2.Qe4#
- 2.Qd5#
- 2.Qxh2#
- 1...Qh3
- 2.Rf5#
- 2.Qe4#
- 2.Qd5#
- 1...Sd3
- 2.Rf5#
- 1...Sf3
- 2.Qg3#
- 1...Sd4
- 2.Bd6#
- 2.Qg3#
- 1...Sxg2!
- threat
- 1.Qxe3+?
- 1...Qe4
- 2.Bd6#
- 2.Rh5#
- 2.Rf5#
- 2.Re8#
- 2.Qxe4#
- 1...Sxe3!
- 1...Qe4
- 1.g5?
- threat
- 2.Bd6#
- 2.Rf5#
- 2.Re8#
- 1...Qf3
- 2.Bd6#
- 2.Re8#
- 1...Qe4
- 2.Rxe4#
- 2.Re8#
- 1...Qd5
- 2.Rf5#
- 2.Qh2#
- 1...Qc6
- 2.Rf5#
- 2.Qh2#
- 1...Qf1
- 2.Bd6#
- 2.Re4#
- 2.Re8#
- 1...Qh3
- 2.Bd6#
- 2.Re4#
- 1...Ba3
- 2.Rf5#
- 2.Re8#
- 1...Sd4
- 2.Bd6#
- 1...Qxh4!
- threat
- 1.Bxe3?
- Keys
- 1.Qxb5!
- threat
- 2.Qe8#
- 1...Qxh4
- 2.Bxe3#
- 1...Qd5
- 2.Rh5#
- 1...Qc6
- 2.Rh5#
- 1...Sd4
- 2.Bd6#
- threat
- 1.Qxb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 7
- Sets
- Q(b);N_GUARD,P_PINP(B)::R(C)
- Q(b);N_GUARD::QAB(A),XQ(b)
- B(c);SBLOCK::B(D)
- S(d);OGATE::QAB(A),XB(c)
- S(d);SBLOCK::B(D)
- Tries
- Try
- B(D);XP(e)
- Threat
- R(J)
- Vars
- Q(b);N_GUARD,XR(C)::QAR(A),XP(f)
- S(d);OGATE,P_SPINS(d),XB(D)::QAB(A),XB(c)
- S(d);SBLOCK::QAR(A)+B(D),DCHECK
- Refutation
- B(c);
- Try
- R(C);XQ(b)
- Threat
- DUALS(2)
- Vars
- S(a);::R(C)
- Refutation
- S(a);
- Try
- R(C);
- Threat
- R1(C)
- Vars
- S(d);SBLOCK::B(D)
- Refutation
- Q(b);CHECK,XR(C)
- Try
- Q(A);N_PINP(e)
- Threat
- DUALS(2)
- Vars
- Q(b);N_GUARD::R(C)
- B(c);::QAB1(A)
- B(c);::B(D)
- S(d);::B(D)
- Refutation
- S(a);
- Try
- Q(A);N_PINP(e)
- Threat
- DUALS(4)
- Vars
- S(d);::B(D)
- Refutation
- S(a);XQ(A)
- Try
- Q(A);N_PINP(e)
- Threat
- DUALS(5)
- Vars
- S(d);::B(D)
- Refutation
- P(f);XQ(A)
- Try
- Q(A);N_PINP(e)
- Threat
- DUALS(2)
- Vars
- Q(b);N_GUARD,P_PINP(B),XQ(A)::R(C)
- S(a);::R1(J)
- S(a);::QAB(A)
- Refutation
- S(a);XQ(A)
- Try
- Q(A);CHECK,XP(e)
- Refutation
- S(d);XQ(A)
- Try
- P(B);
- Threat
- DUALS(3)
- Vars
- S(d);::B(D)
- Refutation
- Q(b);XR(C)
- Try
- Actual
- Q(A);N_PINP(e),XP(f)
- Threat
- QAR(A)
- Vars
- Q(b);N_GUARD,XR(C)::QAR(A)+B(D),XP(e)
- Q(b);N_GUARD::R(C)
- S(d);SBLOCK::QAR(A)+B(D),DCHECK
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).