MESON Chess Problem Database
Problem Display
PID: 101958 (n2K4/3QNB1p/2pP4/p3Rp2/3kpP1q/3P1n1R/5P2/2N1B3 w - - 0 1)
Andrade, Barry Jack da Costa
Boletim da UBP, 1962
#2
12 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qxf2
- 2.Sxf5#
- 1...Qg3
- 2.Sxf5#
- 2.Sxc6#
- 1...Qxe7+
- 2.dxe7#
- 1...Qxh3
- 2.Sxc6#
- 1...Qxf4
- 2.Sxc6#
- 1...Qg4
- 2.Sxc6#
- 1...Qh5
- 2.Sxc6#
- 1...Qh6
- 2.Sxf5#
- 2.Sxc6#
- 1...Sxe1
- 2.Se2#
- 1...Sg1
- 2.Sb3#
- 1...Sd2
- 2.Se2#
- 1...Sh2
- 2.Se2#
- 2.Sb3#
- 1...Sxe5
- 2.Sb3#
- 1...Sg5
- 2.Se2#
- 2.Sb3#
- 2.Sxf5#
- 2.Sxc6#
- 1...Sc7
- 2.dxc7#
- 1...exd3
- 2.Sb3#
- 1...e3
- 2.fxe3#
- 1...c5
- 2.Rd5#
- 1...Qxf2
- Tries
- 1.Kc8?
- threat
- 2.Sxf5#
- 2.Sxc6#
- 1...Qxf2
- 2.Sxf5#
- 1...Qxe7
- 2.dxe7#
- 1...Qxh3
- 2.Sxc6#
- 1...Qxf4
- 2.Sxc6#
- 1...Sxe1
- 2.Se2#
- 1...Sxe5
- 2.Sb3#
- 1...Sd2
- 2.Se2#
- 1...Qg5
- 2.Sxc6#
- 1...Qf6
- 2.Sxc6#
- 1...Qg4
- 2.Sxc6#
- 1...Qh5
- 2.Sxc6#
- 1...c5
- 2.Sxf5#
- 2.Sc6#
- 2.Rd5#
- 1...Sb6+!
- threat
- 1.Bc4?
- threat
- 2.Se2#
- 2.Sb3#
- 1...Qxe7+
- 2.dxe7#
- 1...Qxf2
- 2.Sxf5#
- 1...Qxf4
- 2.Sxc6#
- 1...Sxe1
- 2.Se2#
- 1...Sxe5
- 2.Sb3#
- 1...Sd2
- 2.Se2#
- 1...Sg1
- 2.Sb3#
- 1...a4
- 2.Se2#
- 1...exd3!
- threat
- 1.Rxf3?
- threat
- 2.Se2#
- 2.Sb3#
- 1...Qxe7+
- 2.dxe7#
- 1...Qxf2
- 2.Sb3#
- 2.Sxf5#
- 2.Sxc6#
- 1...Qxf4
- 2.Sxc6#
- 1...exd3
- 2.Sb3#
- 2.Rxd3#
- 1...e3
- 2.fxe3#
- 1...a4
- 2.Se2#
- 1...exf3!
- threat
- 1.Rxe4+?
- 1...Kc5
- 2.Qxc6#
- 1...fxe4!
- 1...Kc5
- 1.Qxf5?
- threat
- 2.Rxe4#
- 2.Qxe4#
- 1...Qxf4
- 2.Sxc6#
- 1...Sxe1
- 2.Se2#
- 1...Sxe5
- 2.Sb3#
- 2.Qxe5#
- 1...exd3
- 2.Sb3#
- 2.Re4#
- 2.Qxd3#
- 2.Qe4#
- 1...Sd2
- 2.Se2#
- 1...Sg5
- 2.Se2#
- 2.Sb3#
- 2.Sxc6#
- 1...e3
- 2.Se2#
- 2.Sb3#
- 2.Re4#
- 2.Qe4#
- 2.fxe3#
- 1...Qxe7+!
- threat
- 1.Qxc6?
- threat
- 2.Bc3#
- 2.Rd5#
- 2.Qa4#
- 2.Qd5#
- 2.Qc3#
- 2.Qc4#
- 2.Qc5#
- 1...Qxf2
- 2.Sxf5#
- 2.Qc5#
- 1...Qxf4
- 2.Bc3#
- 2.Rd5#
- 2.Qd5#
- 2.Qc3#
- 2.Qc5#
- 1...Sxe1
- 2.Se2#
- 2.Sb3#
- 2.Rd5#
- 2.Qc4#
- 2.Qc5#
- 1...Sxe5
- 2.Se2#
- 2.Sb3#
- 2.Bc3#
- 2.Qd5#
- 2.Qc3#
- 1...exd3
- 2.Sb3#
- 2.Bc3#
- 2.Qa4#
- 2.Qd5#
- 2.Qc3#
- 2.Qc4#
- 2.Qc5#
- 1...Sd2
- 2.Se2#
- 2.Rd5#
- 2.Qc5#
- 1...Sb6
- 2.Bc3#
- 2.Qc3#
- 2.Qc5#
- 2.Qxb6#
- 1...Sc7
- 2.Bc3#
- 2.Qa4#
- 2.Qc3#
- 2.Qc4#
- 2.Qc5#
- 2.Qb6#
- 1...a4
- 2.Bc3#
- 2.Rd5#
- 2.Qxa4#
- 2.Qd5#
- 2.Qc3#
- 2.Qc4#
- 2.Qc5#
- 1...Qxe7+!
- threat
- 1.Qa7+?
- 1...c5
- 2.Rd5#
- 2.Qxc5#
- 1...Sb6!
- 1...c5
- 1.Kc8?
- Keys
- 1.Ke8!
- threat
- 2.Sxf5#
- 2.Sxc6#
- 1...Qxe7+
- 2.dxe7#
- 1...Sc7+
- 2.dxc7#
- 1...Qxf2
- 2.Sxf5#
- 1...Qxh3
- 2.Sxc6#
- 1...Qxf4
- 2.Sxc6#
- 1...Sxe1
- 2.Se2#
- 1...Sxe5
- 2.Sb3#
- 1...Sd2
- 2.Se2#
- 1...Qg5
- 2.Sxc6#
- 1...Qf6
- 2.Sxc6#
- 1...Qg4
- 2.Sxc6#
- 1...Qh5
- 2.Sxc6#
- 1...c5
- 2.Sxf5#
- 2.Sc6#
- 2.Rd5#
- threat
- 1.Ke8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 4
- Sets
- Q(d);N_PINS(J),XP(C)::S(J),XP(f)
- Q(d);CHECK,OGATE,XS(J)::QAR(I)+P(H),XQ(d)
- Q(d);N_PINS(J),XR(E)::S(J),XP(g)
- Q(d);N_PINS(J),XP(F)::S(J),XP(g)
- Q(d);N_PINS(J)::S(J),XP(g)
- S(a);XB(B)::S(A)
- S(a);::S(A)
- S(a);XR(G)::S(A)
- S(i);OGATE::QAR(I)+P(H),XS(i)
- P(c);SBLOCK,XP(D)::S(A)
- P(c);OGATE::P(C),XP(c)
- P(g);N_GUARD::R1(G)
- Tries
- Try
- K(L);N_SPINS(J),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- Q(d);XP(C)::S(J),XP(f)
- Q(d);OGATE,XS(J)::QAR(I)+P(H),XQ(d)
- Q(d);XR(E)::S(J),XP(g)
- Q(d);XP(F)::S(J),XP(g)
- S(a);XB(B)::S(A)
- S(a);XR(G)::S(A)
- S(a);::S(A)
- Q(d);::S(J),XP(g)
- Refutation
- S(i);CHECK
- Try
- B(K);
- Threat
- DUALS(2)
- Vars
- Q(d);CHECK,OGATE,XS(J)::QAR(I)+P(H),XQ(d)
- Q(d);N_PINS(J),XP(C)::S(J),XP(f)
- Q(d);N_PINS(J),XP(F)::S(J),XP(g)
- S(a);XB(B)::S(A)
- S(a);XR(G)::S(A)
- S(a);::S(A)
- P(e);::S(A)
- Refutation
- P(c);XP(D)
- Try
- R(E);XS(a)
- Threat
- DUALS(2)
- Vars
- Q(d);CHECK,OGATE,XS(J)::QAR(I)+P(H),XQ(d)
- Q(d);N_PINS(J),XP(F)::S(J),XP(g)
- P(c);OGATE::P(C),XP(c)
- P(e);::S(A)
- Refutation
- P(c);XR(E)
- Try
- R(G);CHECK,XP(c)
- Vars
- K(b);S_FLIGHT::QAR1(I),XP(g)
- Refutation
- P(f);XR(G)
- Try
- Q(I);XP(f)
- Threat
- DUALS(2)
- Vars
- Q(d);N_PINS(J),XP(F)::S(J),XP(g)
- S(a);XB(B)::S(A)
- S(a);::S(A)
- Refutation
- Q(d);CHECK,XS(J)
- Try
- Q(I);XP(g)
- Threat
- DUALS(7)
- Refutation
- Q(d);CHECK,XS(J)
- Try
- Q(I);CHECK
- Refutation
- S(i);P_SPINS(i)
- Try
- Actual
- K(L);N_SPINS(J),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- Q(d);CHECK,OGATE,XS(J)::QAR(I)+P(H),XQ(d)
- S(i);CHECK,OGATE::QAR(I)+P(H),XS(i)
- Q(d);XP(C)::S(J),XP(f)
- Q(d);XR(E)::S(J),XP(g)
- Q(d);XP(F)::S(J),XP(g)
- S(a);XB(B)::S(A)
- S(a);XR(G)::S(A)
- S(a);::S(A)
- Q(d);::S(J),XP(g)
- Q(d);P_PINB(K)::S(J),XP(g)
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).