MESON Chess Problem Database
Problem Display
PID: 87754 (3b4/1r2pB1K/b2P2P1/R2N4/r2nk1Pp/2R1PN2/3QP2q/3n4 w - - 0 1)
Robert, Philippe
The Problemist, 1975
#2
12 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Qxd4#
- 1...Ra2
- 2.Qxd4#
- 1...Ra3
- 2.Qxd4#
- 1...Rc4
- 2.Qd3#
- 1...Rxa5
- 2.Qxd4#
- 1...Rb5
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bc4
- 2.Qxd4#
- 1...Sxc3
- 2.Sxc3#
- 1...Sxe3
- 2.Rxe3#
- 2.Qxe3#
- 1...Sb5
- 2.Qc2#
- 2.Qd3#
- 1...Ra1
- Tries
- 1.Sb4?
- threat
- 2.Sg5#
- 2.Bd5#
- 2.Qxd4#
- 1...Qxd6
- 2.Sg5#
- 1...Qxe2
- 2.Sg5#
- 2.Bd5#
- 1...Raxb4
- 2.Sg5#
- 2.Bd5#
- 1...Rxa5
- 2.Qxd4#
- 1...Rbxb4
- 2.Sg5#
- 2.Bd5#
- 1...Bxe2
- 2.Sg5#
- 2.Bd5#
- 1...Bxa5
- 2.Bd5#
- 2.Qxd4#
- 1...Sxc3
- 2.Sg5#
- 2.Qxd4#
- 1...Sxe3
- 2.Qxe3#
- 2.Qxd4#
- 1...Sxe2
- 2.Sg5#
- 2.Bd5#
- 2.Qd5#
- 1...Sxf3
- 2.Qd5#
- 1...exd6
- 2.Qxd4#
- 1...Qf4
- 2.Bd5#
- 2.Qxd4#
- 1...Qe5
- 2.Rxe5#
- 1...Rb5
- 2.Qd3#
- 2.Qxd4#
- 1...Bd3
- 2.Sg5#
- 2.Bd5#
- 2.Qxd3#
- 1...Bc4
- 2.Sg5#
- 2.Qxd4#
- 1...Bb5
- 2.Bd5#
- 2.Qxd4#
- 1...Bb6
- 2.Sg5#
- 2.Bd5#
- 1...Sc2
- 2.Sg5#
- 2.Bd5#
- 2.Qd5#
- 1...Sb3
- 2.Sg5#
- 2.Bd5#
- 2.Qd5#
- 1...Sb5
- 2.Bd5#
- 2.Qc2#
- 2.Qd3#
- 2.Qd5#
- 1...Sf5
- 2.Sg5#
- 2.Bd5#
- 2.Qd5#
- 1...Sc6
- 2.Sg5#
- 2.Bd5#
- 2.Qd5#
- 1...Se6
- 2.Qd5#
- 1...e6
- 2.Qxd4#
- 1...e5!
- threat
- 1.Sf4?
- threat
- 2.Sg5#
- 2.Bd5#
- 2.Re5#
- 1...Qxf4
- 2.Bd5#
- 1...Qxe2
- 2.Sg5#
- 2.Bd5#
- 1...Rxa5
- 2.Qxd4#
- 1...Bxe2
- 2.Sg5#
- 2.Bd5#
- 1...Bxa5
- 2.Bd5#
- 1...Sxc3
- 2.Sg5#
- 2.Re5#
- 1...Sxe3
- 2.Qxe3#
- 1...Sxe2
- 2.Sg5#
- 2.Bd5#
- 2.Qd5#
- 1...Sxf3
- 2.Qd5#
- 1...Rb5
- 2.Qd3#
- 1...Bc4
- 2.Sg5#
- 2.Re5#
- 2.Qxd4#
- 1...Bb5
- 2.Bd5#
- 1...Sb5
- 2.Bd5#
- 2.Qc2#
- 2.Qd3#
- 2.Qd5#
- 1...Sc6
- 2.Sg5#
- 2.Bd5#
- 2.Qd5#
- 1...Se6
- 2.Re5#
- 2.Qd5#
- 1...e5
- 2.Rxe5#
- 1...e6
- 2.Re5#
- 1...exd6!
- threat
- 1.Sc7?
- threat
- 2.Sg5#
- 2.Bd5#
- 1...Qxd6
- 2.Sg5#
- 1...Rxa5
- 2.Qxd4#
- 1...Sxc3
- 2.Sg5#
- 1...Sxe3
- 2.Qxe3#
- 1...Sxf3
- 2.Qd5#
- 1...exd6
- 2.Bd5#
- 1...e5
- 2.Bd5#
- 1...Qf4
- 2.Bd5#
- 1...Qe5
- 2.Rxe5#
- 1...Rb5
- 2.Qd3#
- 1...Bc4
- 2.Sg5#
- 2.Qxd4#
- 1...Bb5
- 2.Bd5#
- 1...Sb5
- 2.Bd5#
- 2.Qc2#
- 2.Qd3#
- 2.Qd5#
- 1...Se6
- 2.Qd5#
- 1...e6!
- threat
- 1.Rc4?
- threat
- 2.Qc2#
- 2.Qd3#
- 2.Qxd4#
- 1...Rxc4
- 2.Qd3#
- 1...Bxc4
- 2.Qxd4#
- 1...Sxe3
- 2.Qxe3#
- 2.Qd3#
- 2.Qxd4#
- 1...e5
- 2.Qc2#
- 2.Qd3#
- 1...Qe5
- 2.Qc2#
- 2.Qd3#
- 1...Ra2
- 2.Rxd4#
- 2.Qd3#
- 2.Qxd4#
- 1...Ra3
- 2.Rxd4#
- 2.Qxd4#
- 1...Rb2
- 2.Qd3#
- 2.Qxd4#
- 1...Rb3
- 2.Qxd4#
- 1...Bb6
- 2.Qc2#
- 2.Qd3#
- 1...Sb2
- 2.Sc3#
- 2.Qxd4#
- 1...Sf2
- 2.Sc3#
- 2.Qxd4#
- 1...Qxe2!
- threat
- 1.Qc2+?
- 1...Bd3
- 2.Qxd3#
- 1...Sxc2!
- 1...Bd3
- 1.Sb4?
- Keys
- 1.Sxe7!
- threat
- 2.Sg5#
- 2.Bd5#
- 1...Qxd6
- 2.Sg5#
- 1...Rxa5
- 2.Qxd4#
- 1...Rxe7
- 2.Sg5#
- 1...Bxa5
- 2.Bd5#
- 1...Bxe7
- 2.Bd5#
- 1...Sxc3
- 2.Sg5#
- 1...Sxe3
- 2.Qxe3#
- 1...Sxf3
- 2.Qd5#
- 1...Qf4
- 2.Bd5#
- 1...Qe5
- 2.Rxe5#
- 1...Rb5
- 2.Qd3#
- 1...Bc4
- 2.Sg5#
- 2.Qxd4#
- 1...Bb5
- 2.Bd5#
- 1...Sb5
- 2.Bd5#
- 2.Qc2#
- 2.Qd3#
- 2.Qd5#
- 1...Se6
- 2.Qd5#
- threat
- 1.Sxe7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 10
- REMOVED MATES = 6
- Sets
- R(c);N_GUARD::QAR1(A),XS(d)
- R(c);S_CUTB(g)::QAB1(A)
- R(c);N_GUARD,XR(G)::QAR1(A),XS(d)
- R(h);S_CUTB(g)::QAB1(A)
- B(g);N_GUARD::QAB1(A),XB(g)
- B(g);S_CUTR(c)::QAR1(A),XS(d)
- S(a);XR(C)::S(H),XS(a)
- Tries
- Try
- S(H);
- Threat
- DUALS(3)
- Vars
- Q(b);XP(I)::S(E)
- R(c);XR(G)::QAR1(A),XS(d)
- S(d);OGATE,XS(E)::QAB1(A)
- P(i);P_PINB(K),XP(I)::QAR1(A),XS(d)
- Q(b);N_GUARD::R1(G),XQ(b)
- S(d);OGATE::QAB1(A)
- P(i);P_PINB(K)::QAR1(A),XS(d)
- Refutation
- P(i);P_PINB(K)
- Try
- S(H);
- Threat
- DUALS(3)
- Vars
- Q(b);XS(H)::B(K)
- R(c);N_GUARD,XR(G)::QAR1(A),XS(d)
- B(j);XR(G)::B(K)
- S(a);OGATE,XP(D)::QAR1(A),XS(a)
- S(d);OGATE,XS(E)::QAB1(A)
- R(h);S_CUTB(g)::QAB1(A)
- B(g);::B(K)
- P(i);P_PINB(K)::R1(G),XP(i)
- P(i);P_PINB(K)::R1(G)
- Refutation
- P(i);P_PINB(K),XP(I)
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- Q(b);XP(I)::S(E)
- R(c);N_GUARD,XR(G)::QAR1(A),XS(d)
- S(a);XR(C)::S(E)
- S(a);OGATE,XP(D)::QAR1(A),XS(a)
- S(d);OGATE,XS(E)::QAB1(A)
- P(i);XP(I)::B(K)
- P(i);::B(K)
- Q(b);::B(K)
- Q(b);N_GUARD::R1(G),XQ(b)
- R(h);S_CUTB(g)::QAB1(A)
- B(g);::B(K)
- S(d);OGATE::QAB1(A)
- Refutation
- P(i);
- Try
- R(C);P_PINS(d)
- Threat
- DUALS(3)
- Vars
- R(c);N_SPINS(d),XR(C)::QAB1(A)
- B(g);N_SPINS(d),XR(C)::QAR1(A),XS(d)
- R(h);::QAR1(A),XS(d)
- Refutation
- Q(b);XP(B)
- Try
- Q(A);CHECK
- Vars
- B(g);N_GUARD,P_SPINB(g)::QAB1(A),XB(g)
- Refutation
- S(d);XQ(A)
- Try
- Actual
- S(H);XP(i)
- Threat
- DUALS(2)
- Vars
- Q(b);XP(I)::S(E)
- R(c);N_GUARD,XR(G)::QAR1(A),XS(d)
- R(h);P_PINB(K),XS(H)::S(E)
- B(j);XR(G)::B(K)
- B(j);XS(H)::B(K)
- S(a);XR(C)::S(E)
- S(a);OGATE,XP(D)::QAR1(A),XS(a)
- S(d);OGATE,XS(E)::QAB1(A)
- Q(b);::B(K)
- Q(b);N_GUARD::R1(G),XQ(b)
- R(h);S_CUTB(g)::QAB1(A)
- B(g);::B(K)
- S(d);OGATE::QAB1(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).