MESON Chess Problem Database
Problem Display
PID: 247706 (2N1b3/P5rr/P2pp3/Rq1kn3/1P5p/5P2/2N1QBB1/2R2K2 w - - 0 1)
Vaughan, Colin V
7th Comm., Stratford Express, 1949
#2
12 + 9
| 14867 | BCPS Library | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qxa5
- 2.Qe4#
- 1...Qc5
- 2.Qe4#
- 1...Rd7
- 2.Qxb5#
- 1...Bh5
- 2.Qxb5#
- 1...Bc6
- 2.Sb6#
- 1...Bg6
- 2.Qxb5#
- 1...Bf7
- 2.Se7#
- 2.Qxb5#
- 1...Sd3
- 2.Qe4#
- 1...Sxf3
- 2.Bxf3#
- 1...Sc4
- 2.Qe4#
- 1...Sg4
- 2.fxg4#
- 2.f4#
- 1...Sc6
- 2.Sb6#
- 2.Rxb5#
- 2.Qxb5#
- 1...Sg6
- 2.f4#
- 1...Sd7
- 2.a8Q#
- 2.a8B#
- 1...Sf7
- 2.Se7#
- 1...Qxa5
- Tries
- 1.Sa1?
- threat
- 2.Sb6#
- 1...Qxa5
- 2.Qe4#
- 1...Qc5
- 2.Qe4#
- 1...Sc4
- 2.Qe4#
- 1...Sd7
- 2.a8Q#
- 2.a8B#
- 1...Rb7!
- threat
- 1.Se1?
- threat
- 2.Sb6#
- 1...Qxa5
- 2.Qe4#
- 1...Qc5
- 2.Qe4#
- 1...Sc4
- 2.Qe4#
- 1...Sd7
- 2.a8Q#
- 2.a8B#
- 1...Rb7!
- threat
- 1.Sa3?
- threat
- 2.Sb6#
- 1...Qxa5
- 2.Qe4#
- 1...Qc5
- 2.Qe4#
- 1...Sc4
- 2.Qe4#
- 1...Sd7
- 2.a8Q#
- 2.a8B#
- 1...Rb7!
- threat
- 1.Sd4?
- threat
- 2.Sb6#
- 1...Qxa5
- 2.Qe4#
- 1...Sc4
- 2.Qe4#
- 2.Qxe6#
- 1...Sd7
- 2.a8Q#
- 2.a8B#
- 1...Rb7!
- threat
- 1.Rd1+?
- 1...Sd3
- 2.Qe4#
- 1...Kc6!
- 1...Sd3
- 1.Rxb5+?
- 1...Bxb5
- 2.Qxb5#
- 1...Kc6!
- 1...Bxb5
- 1.f4+?
- 1...Sf3
- 2.Bxf3#
- 1...Rxg2!
- 1...Sf3
- 1.a8Q+?
- 1...Bc6
- 2.Sb6#
- 2.Rxb5#
- 2.Qxb5#
- 1...Sc6
- 2.Sb6#
- 2.Rd1#
- 2.Rxb5#
- 2.Qxb5#
- 1...Rb7!
- 1...Bc6
- 1.a8B+?
- 1...Bc6
- 2.Sb6#
- 2.Rxb5#
- 2.Qxb5#
- 1...Sc6
- 2.Sb6#
- 2.Rd1#
- 2.Rxb5#
- 2.Qxb5#
- 1...Rb7!
- 1...Bc6
- 1.Sa1?
- Keys
- 1.Bb6!
- threat
- 2.Se3#
- 1...Kc6
- 2.Qxb5#
- 1...Sxf3
- 2.Bxf3#
- 1...Sd3
- 2.Qe4#
- 1...Qc5
- 2.Qe4#
- 1...Sc4
- 2.Qe4#
- 1...Sg4
- 2.fxg4#
- 2.f4#
- 1...Sc6
- 2.Rxb5#
- 2.Qxb5#
- 1...Sg6
- 2.f4#
- 1...Sd7
- 2.a8Q#
- 2.a8B#
- 1...Sf7
- 2.Se7#
- threat
- 1.Bb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 5
- Sets
- Q(b);N_PINQ(D),N_SPINQ(b),XR(I)::QAB1(D)
- Q(b);N_PINQ(D)::QAB1(D)
- R(g);S_CUTB(i)::QAR2(D),XQ(b)
- B(i);N_GUARD::QAR2(D),XQ(b)
- B(i);SBLOCK::S(L)
- S(d);N_PINQ(D)::QAB1(D)
- S(d);OGATE,P_SPINS(d),XP(G)::B(F),XS(d)
- S(d);N_GUARD,S_CUTR(g)::B(F)+P(G)
- S(d);N_GUARD,S_CUTB(i),S_CUTR(g)::P=Q
- S(d);S_CUTR(g)::S(L)
- Tries
- Try
- S(C);
- Threat
- S(L)
- Vars
- Q(b);N_PINQ(D),N_SPINQ(b),XR(I)::QAB1(D)
- Q(b);N_PINQ(D)::QAB1(D)
- S(d);N_PINQ(D)::QAB1(D)
- S(d);N_GUARD,S_CUTB(i),S_CUTR(g)::P=Q
- Refutation
- R(g);
- Try
- S(C);
- Threat
- S(L)
- Vars
- Q(b);N_PINQ(D),N_SPINQ(b),XR(I)::QAB1(D)
- Q(b);N_PINQ(D)::QAB1(D)
- S(d);N_PINQ(D)::QAB1(D)
- S(d);N_GUARD,S_CUTB(i),S_CUTR(g)::P=Q
- Refutation
- R(g);
- Try
- S(C);
- Threat
- S(L)
- Vars
- Q(b);N_PINQ(D),N_SPINQ(b),XR(I)::QAB1(D)
- Q(b);N_PINQ(D)::QAB1(D)
- S(d);N_PINQ(D)::QAB1(D)
- S(d);N_GUARD,S_CUTB(i),S_CUTR(g)::P=Q
- Refutation
- R(g);
- Try
- S(C);
- Threat
- S(L)
- Vars
- Q(b);N_PINQ(D),N_SPINQ(b),XR(I)::QAB1(D)
- S(d);N_GUARD,S_CUTB(i),S_CUTR(g)::P=Q
- Refutation
- R(g);
- Try
- R(A);CHECK
- Vars
- S(d);N_PINQ(D),P_SPINS(d)::QAB1(D)
- Refutation
- K(c);N_SPINQ(b),S_FLIGHT
- Try
- R(I);CHECK,N_SPINQ(D),XQ(b)
- Vars
- B(i);OGATE,P_PINQ(D),XR(I)::QAR2(D),XB(i)
- Refutation
- K(c);S_FLIGHT
- Try
- P(G);CHECK
- Vars
- S(d);N_GUARD,P_SPINS(d)::B(F),XS(d)
- Refutation
- R(g);XB(F)
- Try
- P(K);CHECK
- Refutation
- R(g);P_SPINR(g)
- Try
- P(K);CHECK
- Refutation
- R(g);P_SPINR(g)
- Try
- Actual
- B(E);
- Threat
- S(C)
- Vars
- K(c);N_SPINQ(b),S_FLIGHT::QAB1(D),XQ(b)
- S(d);OGATE,P_SPINS(d),XP(G)::B(F),XS(d)
- S(d);N_PINQ(D)::QAB1(D)
- Q(b);N_PINQ(D)::QAB1(D)
- S(d);N_GUARD,S_CUTR(g)::B(F)+P(G)
- S(d);N_GUARD,S_CUTB(i),S_CUTR(g)::P=Q
- S(d);S_CUTR(g)::S(L)
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).