MESON Chess Problem Database
Problem Display
PID: 146421 (2qR4/2P1k1Bp/1Qp1P3/2p1R2B/1bP4N/p5n1/K7/8 w - - 0 1)
Andrade, Barry Jack da Costa
Kemp, Charles Edward
Western Morning News, 1925
(First published on Sat Oct 31 1925)
#2
10 + 8
| 15044 | Kemp Archive | 2013 |
| 15239 | Valois Notebooks | 2024 |
SOLUTION
- SOUND
- Sets
- 1...Qa6
- 2.Rd7#
- 1...Qxe6
- 2.c8S#
- 1...Qb7
- 2.Rd7#
- 1...Qd7
- 2.Rxd7#
- 1...Qxc7
- 2.Qxc7#
- 1...Qa8
- 2.Rd7#
- 1...Qb8
- 2.Rd7#
- 1...Qxd8
- 2.cxd8Q#
- 1...Be1
- 2.Qxc5#
- 1...Bd2
- 2.Qxc5#
- 1...Bc3
- 2.Qxc5#
- 1...Ba5
- 2.Qxc5#
- 1...Sf1
- 2.Sf5#
- 1...Sh1
- 2.Sf5#
- 1...Se2
- 2.Sf5#
- 1...Se4
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sxh5
- 2.Sf5#
- 1...h6
- 2.Sg6#
- 1...Qa6
- Tries
- 1.Kb1?
- 1...Qxe6
- 2.c8S#
- 1...Qxc7
- 2.Qxc7#
- 1...Qxd8
- 2.cxd8Q#
- 1...Sxh5
- 2.Sf5#
- 1...Qd7
- 2.Rxd7#
- 1...Qa6
- 2.Rd7#
- 1...Qb7
- 2.Rd7#
- 1...Qa8
- 2.Rd7#
- 1...Qb8
- 2.Rd7#
- 1...Be1
- 2.Qxc5#
- 1...Bd2
- 2.Qxc5#
- 1...Bc3
- 2.Qxc5#
- 1...Ba5
- 2.Qxc5#
- 1...Sf1
- 2.Sf5#
- 1...Sh1
- 2.Sf5#
- 1...Se2
- 2.Sf5#
- 1...Se4
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...h6
- 2.Sg6#
- 1...a2+!
- 1...Qxe6
- 1.Kb3?
- 1...Qxe6
- 2.c8S#
- 1...Qxc7
- 2.Qxc7#
- 1...Qxd8
- 2.cxd8Q#
- 1...Sxh5
- 2.Sf5#
- 1...Qd7
- 2.Rxd7#
- 1...Qa6
- 2.Rd7#
- 1...Qb7
- 2.Rd7#
- 1...Qa8
- 2.Rd7#
- 1...Qb8
- 2.Rd7#
- 1...Be1
- 2.Qxc5#
- 1...Bd2
- 2.Qxc5#
- 1...Bc3
- 2.Qxc5#
- 1...Ba5
- 2.Qxc5#
- 1...Sf1
- 2.Sf5#
- 1...Sh1
- 2.Sf5#
- 1...Se2
- 2.Sf5#
- 1...Se4
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...h6
- 2.Sg6#
- 1...a2!
- 1...Qxe6
- 1.Bf7?
- 1...Qxc7
- 2.Qxc7#
- 1...Qxd8
- 2.cxd8Q#
- 1...Qd7
- 2.Rxd7#
- 1...Qa6
- 2.Rd7#
- 1...Qb7
- 2.Rd7#
- 1...Qa8
- 2.Rd7#
- 1...Qb8
- 2.Rd7#
- 1...Be1
- 2.Qxc5#
- 1...Bd2
- 2.Qxc5#
- 1...Bc3
- 2.Qxc5#
- 1...Ba5
- 2.Qxc5#
- 1...Sf1
- 2.Sf5#
- 1...Sh1
- 2.Sf5#
- 1...Se2
- 2.Sf5#
- 1...Se4
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sh5
- 2.Sf5#
- 1...h5
- 2.Sg6#
- 1...h6
- 2.Sg6#
- 1...Qxe6!
- 1...Qxc7
- 1.Re3?
- 1...Qxe6
- 2.c8S#
- 1...Qxc7
- 2.Qxc7#
- 1...Qxd8
- 2.cxd8Q#
- 1...Sxh5
- 2.Sf5#
- 1...Qd7
- 2.Rxd7#
- 1...Qa6
- 2.Rd7#
- 1...Qb7
- 2.Rd7#
- 1...Qa8
- 2.Rd7#
- 1...Qb8
- 2.Rd7#
- 1...Be1
- 2.Qxc5#
- 1...Bd2
- 2.Qxc5#
- 1...Bc3
- 2.Qxc5#
- 1...Ba5
- 2.Qxc5#
- 1...Sf1
- 2.Sf5#
- 1...Sh1
- 2.Sf5#
- 1...Se2
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...h6
- 2.Sg6#
- 1...Se4!
- 1...Qxe6
- 1.Re4?
- 1...Qxe6
- 2.c8S#
- 1...Qxc7
- 2.Qxc7#
- 1...Qxd8
- 2.cxd8Q#
- 1...Sxh5
- 2.Sf5#
- 1...Qd7
- 2.Rxd7#
- 1...Qa6
- 2.Rd7#
- 1...Qb7
- 2.Rd7#
- 1...Qa8
- 2.Rd7#
- 1...Qb8
- 2.Rd7#
- 1...Be1
- 2.Qxc5#
- 1...Bd2
- 2.Qxc5#
- 1...Bc3
- 2.Qxc5#
- 1...Ba5
- 2.Qxc5#
- 1...Sf1
- 2.Sf5#
- 1...Sh1
- 2.Sf5#
- 1...Se2
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...h6
- 2.Sg6#
- 1...Sxe4!
- 1...Qxe6
- 1.Re8+?
- 1...Kd6
- 2.Rd5#
- 1...Qxe8!
- 1...Kd6
- 1.Qa5?
- 1...Qxe6
- 2.c8S#
- 1...Qxc7
- 2.Qxc7#
- 1...Qxd8
- 2.cxd8Q#
- 1...Sxh5
- 2.Sf5#
- 1...Qd7
- 2.Rxd7#
- 1...Qa6
- 2.Rd7#
- 1...Qb7
- 2.Rd7#
- 1...Qa8
- 2.Rd7#
- 1...Qb8
- 2.Rd7#
- 1...Be1
- 2.Qxc5#
- 1...Bd2
- 2.Qxc5#
- 1...Bc3
- 2.Qxc5#
- 1...Sf1
- 2.Sf5#
- 1...Sh1
- 2.Sf5#
- 1...Se2
- 2.Sf5#
- 1...Se4
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...h6
- 2.Sg6#
- 1...Bxa5!
- 1...Qxe6
- 1.Qxc6?
- threat
- 2.Qe8#
- 2.Qd6#
- 1...Qxc7
- 2.Re8#
- 2.Qe8#
- 2.Qxc7#
- 1...Qa6
- 2.Rd7#
- 2.Re8#
- 2.Qd7#
- 2.Qe8#
- 1...Qd7
- 2.Rxd7#
- 2.Qxd7#
- 2.exd7#
- 1...Se4
- 2.Sf5#
- 2.Qe8#
- 1...Sf5
- 2.Sxf5#
- 2.Qe8#
- 1...Qxd8!
- threat
- 1.Kb1?
- Keys
- 1.Qa7!
- 1...Qxe6
- 2.c8Q#
- 2.c8R#
- 1...Qxc7
- 2.Qxc7#
- 1...Qxd8
- 2.c8S#
- 1...Sxh5
- 2.Sf5#
- 1...Qd7
- 2.Rxd7#
- 1...Qa6
- 2.Rd7#
- 1...Qb7
- 2.Rd7#
- 1...Qa8
- 2.Rd7#
- 1...Qb8
- 2.Rd7#
- 2.cxb8Q#
- 2.cxb8R#
- 1...Be1
- 2.Qxc5#
- 1...Bd2
- 2.Qxc5#
- 1...Bc3
- 2.Qxc5#
- 1...Ba5
- 2.Qxc5#
- 1...Sf1
- 2.Sf5#
- 1...Sh1
- 2.Sf5#
- 1...Se2
- 2.Sf5#
- 1...Se4
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...h6
- 2.Sg6#
- 1...Qxe6
- 1.Qa7!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 2
- Sets
- Q(h);N_GUARD::R1(J)
- Q(h);OGATE,P_PINP(B),P_SPINQ(h),XP(G)::P=S
- Q(h);N_GUARD::R1(J),XQ(h)
- Q(h);OGATE,XP(H)::QAR2(F),XQ(h)
- Q(h);OGATE,XR(J)::PXQ(h)=Q
- B(c);N_GUARD::QAB(F),XP(d)
- S(b);N_GUARD::S(C)
- S(b);N_GUARD::S(C),XS(b)
- S(b);N_GUARD,XB(E)::S(C)
- P(g);N_GUARD::S(C)
- Tries
- Try
- K(A);S_FLIGHT
- Vars
- Q(h);OGATE,P_SPINQ(h),XP(G)::P=S
- Q(h);OGATE,XP(H)::QAR2(F),XQ(h)
- Q(h);OGATE,XR(J)::PXQ(h)=Q
- S(b);N_GUARD,XB(E)::S(C)
- Q(h);N_GUARD::R1(J),XQ(h)
- Q(h);N_GUARD::R1(J)
- B(c);N_GUARD::QAB(F),XP(d)
- S(b);N_GUARD::S(C)
- S(b);N_GUARD::S(C),XS(b)
- P(g);N_GUARD::S(C)
- Refutation
- P(a);CHECK
- Try
- K(A);S_FLIGHT
- Vars
- Q(h);OGATE,P_PINP(B),P_SPINQ(h),XP(G)::P=S
- Q(h);OGATE,XP(H)::QAR2(F),XQ(h)
- Q(h);OGATE,XR(J)::PXQ(h)=Q
- S(b);N_GUARD,XB(E)::S(C)
- Q(h);N_GUARD::R1(J),XQ(h)
- Q(h);N_GUARD::R1(J)
- B(c);N_GUARD::QAB(F),XP(d)
- S(b);N_GUARD::S(C)
- S(b);N_GUARD::S(C),XS(b)
- P(g);N_GUARD::S(C)
- Refutation
- P(a);
- Try
- B(E);
- Vars
- Q(h);OGATE,XP(H)::QAR2(F),XQ(h)
- Q(h);OGATE,XR(J)::PXQ(h)=Q
- Q(h);N_GUARD::R1(J),XQ(h)
- Q(h);N_GUARD::R1(J)
- B(c);N_GUARD::QAB(F),XP(d)
- S(b);N_GUARD::S(C)
- S(b);N_GUARD::S(C),XS(b)
- P(g);N_GUARD::S(C)
- Refutation
- Q(h);P_PINP(B),P_SPINQ(h),XP(G)
- Try
- R(D);
- Vars
- Q(h);OGATE,P_PINP(B),P_SPINQ(h),XP(G)::P=S
- Q(h);OGATE,XP(H)::QAR2(F),XQ(h)
- Q(h);OGATE,XR(J)::PXQ(h)=Q
- S(b);N_GUARD,XB(E)::S(C)
- Q(h);N_GUARD::R1(J),XQ(h)
- Q(h);N_GUARD::R1(J)
- B(c);N_GUARD::QAB(F),XP(d)
- S(b);N_GUARD::S(C)
- S(b);N_GUARD::S(C),XS(b)
- P(g);N_GUARD::S(C)
- Refutation
- S(b);
- Try
- R(D);
- Vars
- Q(h);OGATE,P_PINP(B),P_SPINQ(h),XP(G)::P=S
- Q(h);OGATE,XP(H)::QAR2(F),XQ(h)
- Q(h);OGATE,XR(J)::PXQ(h)=Q
- S(b);N_GUARD,XB(E)::S(C)
- Q(h);N_GUARD::R1(J),XQ(h)
- Q(h);N_GUARD::R1(J)
- B(c);N_GUARD::QAB(F),XP(d)
- S(b);N_GUARD::S(C)
- S(b);N_GUARD::S(C),XS(b)
- P(g);N_GUARD::S(C)
- Refutation
- S(b);XR(D)
- Try
- R(J);CHECK
- Vars
- K(f);P_SPINP(e),S_FLIGHT::R1(D)
- Refutation
- Q(h);XR(J)
- Try
- Q(F);
- Vars
- Q(h);OGATE,P_PINP(B),P_SPINQ(h),XP(G)::P=S
- Q(h);OGATE,XP(H)::QAR2(F),XQ(h)
- Q(h);OGATE,XR(J)::PXQ(h)=Q
- S(b);N_GUARD,XB(E)::S(C)
- Q(h);N_GUARD::R1(J),XQ(h)
- Q(h);N_GUARD::R1(J)
- B(c);N_GUARD::QAB(F),XP(d)
- S(b);N_GUARD::S(C)
- S(b);N_GUARD::S(C),XS(b)
- P(g);N_GUARD::S(C)
- Refutation
- B(c);XQ(F)
- Try
- Q(F);XP(e)
- Threat
- DUALS(2)
- Refutation
- Q(h);XR(J)
- Try
- Actual
- Q(F);
- Vars
- Q(h);OGATE,P_PINP(B),P_SPINQ(h),XP(G)::P=Q
- Q(h);OGATE,P_SPINQ(h),XP(H)::QAR2(F),XQ(h)
- Q(h);OGATE,SBLOCK,XR(J)::P=S
- S(b);N_GUARD,XB(E)::S(C)
- Q(h);N_GUARD::R1(J),XQ(h)
- Q(h);N_GUARD::R1(J)
- B(c);N_GUARD::QAB(F),XP(d)
- S(b);N_GUARD::S(C)
- S(b);N_GUARD::S(C),XS(b)
- P(g);N_GUARD::S(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).