MESON Chess Problem Database
Problem Display
PID: 57947 (6nn/3N3Q/3Pk3/2q3pK/2P1N1p1/1B4P1/8/5R2 w - - 0 1)
Dobbs, Gilbert S
The Chess Review, 1936
#2
9 + 6
SOLUTION
- SOUND
- Sets
- 1...Qg1
- 2.Qf5#
- 2.c5#
- 1...Qf2
- 2.c5#
- 1...Qa3
- 2.Qf5#
- 1...Qe3
- 2.Qf5#
- 1...Qb4
- 2.Qf5#
- 1...Qd4
- 2.Qf5#
- 1...Qb6
- 2.Qf5#
- 1...Qxd6
- 2.Sxg5#
- 1...Qa7
- 2.Qf5#
- 2.c5#
- 1...Qxc4
- 2.Bxc4#
- 2.Qf5#
- 1...Qa5
- 2.c5#
- 1...Qb5
- 2.cxb5#
- 1...Qd5
- 2.cxd5#
- 1...Qe5
- 2.Sf8#
- 1...Qf5
- 2.Qxf5#
- 1...Qc6
- 2.Qf5#
- 1...Qc7
- 2.Qf5#
- 2.c5#
- 1...Qc8
- 2.Qf5#
- 2.c5#
- 1...Sf6+
- 2.Rxf6#
- 1...Sh6
- 2.Rf6#
- 2.Qe7#
- 1...Se7
- 2.Qxe7#
- 1...Sg6
- 2.Qf7#
- 1...Sf7
- 2.Qxf7#
- 1...Qg1
- Tries
- 1.Kxg4?
- 1...Qf5+
- 2.Qxf5#
- 1...Sf6+
- 2.Rxf6#
- 1...Qxd6
- 2.Sxg5#
- 1...Qxc4
- 2.Bxc4#
- 2.Qf5#
- 1...Se7
- 2.Qxe7#
- 1...Sf7
- 2.Qxf7#
- 1...Qg1
- 2.Qf5#
- 2.c5#
- 1...Qf2
- 2.c5#
- 1...Qa3
- 2.Qf5#
- 1...Qe3
- 2.Qf5#
- 1...Qb4
- 2.Qf5#
- 1...Qd4
- 2.Qf5#
- 1...Qb6
- 2.Qf5#
- 1...Qa7
- 2.Qf5#
- 2.c5#
- 1...Qa5
- 2.c5#
- 1...Qb5
- 2.cxb5#
- 1...Qd5
- 2.cxd5#
- 1...Qe5
- 2.Sf8#
- 1...Qc6
- 2.Qf5#
- 1...Qc7
- 2.Qf5#
- 2.c5#
- 1...Qc8
- 2.Qf5#
- 2.c5#
- 1...Sg6
- 2.Qf7#
- 1...Sh6+!
- 1...Qf5+
- 1.Rf3?
- 1...Sf6+
- 2.Rxf6#
- 1...Qxd6
- 2.Sxg5#
- 1...Qxc4
- 2.Bxc4#
- 2.Qf5#
- 1...Se7
- 2.Qxe7#
- 1...Sf7
- 2.Qxf7#
- 1...Qf2
- 2.Qf5#
- 2.c5#
- 1...Qg1
- 2.Qf5#
- 2.c5#
- 1...Qa3
- 2.Qf5#
- 1...Qe3
- 2.Qf5#
- 1...Qb4
- 2.Qf5#
- 1...Qd4
- 2.Qf5#
- 1...Qb6
- 2.Qf5#
- 1...Qa7
- 2.Qf5#
- 2.c5#
- 1...Qa5
- 2.c5#
- 1...Qb5
- 2.cxb5#
- 1...Qd5
- 2.cxd5#
- 1...Qe5
- 2.Sf8#
- 1...Qf5
- 2.Qxf5#
- 1...Qc6
- 2.Qf5#
- 1...Qc7
- 2.Qf5#
- 2.c5#
- 1...Qc8
- 2.Qf5#
- 2.c5#
- 1...Sh6
- 2.Rf6#
- 2.Qe7#
- 1...Sg6
- 2.Qf7#
- 1...gxf3!
- 1...Sf6+
- 1.Rf4?
- 1...Sf6+
- 2.Rxf6#
- 1...Qxd6
- 2.Sxg5#
- 1...Qxc4
- 2.Bxc4#
- 2.Qf5#
- 1...Se7
- 2.Qxe7#
- 1...Sf7
- 2.Qxf7#
- 1...Qf2
- 2.Qf5#
- 2.c5#
- 1...Qg1
- 2.Qf5#
- 2.c5#
- 1...Qa3
- 2.Qf5#
- 1...Qe3
- 2.Qf5#
- 1...Qb4
- 2.Qf5#
- 1...Qd4
- 2.Qf5#
- 1...Qb6
- 2.Qf5#
- 1...Qa7
- 2.Qf5#
- 2.c5#
- 1...Qa5
- 2.c5#
- 1...Qb5
- 2.cxb5#
- 1...Qd5
- 2.cxd5#
- 1...Qe5
- 2.Sf8#
- 1...Qf5
- 2.Qxf5#
- 1...Qc6
- 2.Qf5#
- 1...Qc7
- 2.Qf5#
- 2.c5#
- 1...Qc8
- 2.Qf5#
- 2.c5#
- 1...Sh6
- 2.Rf6#
- 2.Qe7#
- 1...Sg6
- 2.Qf7#
- 1...gxf4+!
- 1...Sf6+
- 1.Rf5?
- threat
- 2.Sdxc5#
- 2.Sf8#
- 1...Sf6+
- 2.Rxf6#
- 1...Qxd6
- 2.Sxg5#
- 1...Qxc4
- 2.Sdc5#
- 2.Sf8#
- 2.Bxc4#
- 2.Re5#
- 1...Sg6
- 2.Qf7#
- 1...Qf2
- 2.Sf8#
- 2.Re5#
- 2.c5#
- 1...Qg1
- 2.Sf8#
- 2.Re5#
- 2.c5#
- 1...Qa3
- 2.Sf8#
- 2.Re5#
- 1...Qe3
- 2.Sf8#
- 2.Re5#
- 1...Qb4
- 2.Sf8#
- 2.Re5#
- 1...Qd4
- 2.Sf8#
- 1...Qb6
- 2.Sf8#
- 2.Re5#
- 1...Qa7
- 2.Sf8#
- 2.Re5#
- 2.c5#
- 1...Qa5
- 2.Sf8#
- 2.c5#
- 1...Qb5
- 2.Sf8#
- 2.cxb5#
- 1...Qd5
- 2.Sf8#
- 2.cxd5#
- 1...Qe5
- 2.Sf8#
- 2.Rxe5#
- 1...Qc6
- 2.Sf8#
- 2.Re5#
- 1...Qc7
- 2.Sf8#
- 2.Re5#
- 2.c5#
- 1...Qc8
- 2.Re5#
- 2.c5#
- 1...Qxf5!
- threat
- 1.Rf8?
- 1...Sf6+
- 2.Rxf6#
- 1...Qxd6
- 2.Sxg5#
- 1...Qxc4
- 2.Bxc4#
- 2.Qf5#
- 1...Se7
- 2.Qxe7#
- 1...Sf7
- 2.Qxf7#
- 1...Qf2
- 2.c5#
- 1...Qg1
- 2.Qf5#
- 2.c5#
- 1...Qa3
- 2.Qf5#
- 1...Qe3
- 2.Qf5#
- 1...Qb4
- 2.Qf5#
- 1...Qd4
- 2.Qf5#
- 1...Qb6
- 2.Qf5#
- 1...Qa7
- 2.Qf5#
- 2.c5#
- 1...Qa5
- 2.c5#
- 1...Qb5
- 2.cxb5#
- 1...Qd5
- 2.cxd5#
- 1...Qf5
- 2.Qxf5#
- 1...Qc6
- 2.Qf5#
- 1...Qc7
- 2.Qf5#
- 2.c5#
- 1...Qc8
- 2.Qf5#
- 2.c5#
- 1...Sh6
- 2.Rf6#
- 2.Re8#
- 2.Qe7#
- 1...Sg6
- 2.Qf7#
- 1...Qe5!
- 1...Sf6+
- 1.Qxg8+?
- 1...Sf7
- 2.Qxf7#
- 2.Qe8#
- 1...Kxd7!
- 1...Sf7
- 1.Kxg4?
- Keys
- 1.Rf2!
- 1...Sf6+
- 2.Rxf6#
- 1...Qxf2
- 2.c5#
- 1...Qxd6
- 2.Sxg5#
- 1...Qxc4
- 2.Bxc4#
- 2.Qf5#
- 1...Se7
- 2.Qxe7#
- 1...Sf7
- 2.Qxf7#
- 1...Qa3
- 2.Qf5#
- 1...Qe3
- 2.Qf5#
- 1...Qb4
- 2.Qf5#
- 1...Qd4
- 2.Qf5#
- 1...Qb6
- 2.Qf5#
- 1...Qa7
- 2.Qf5#
- 2.c5#
- 1...Qa5
- 2.c5#
- 1...Qb5
- 2.cxb5#
- 1...Qd5
- 2.cxd5#
- 1...Qe5
- 2.Sf8#
- 1...Qf5
- 2.Qxf5#
- 1...Qc6
- 2.Qf5#
- 1...Qc7
- 2.Qf5#
- 2.c5#
- 1...Qc8
- 2.Qf5#
- 2.c5#
- 1...Sh6
- 2.Rf6#
- 2.Qe7#
- 1...Sg6
- 2.Qf7#
- 1...Sf6+
- 1.Rf2!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- Q(b);OGATE::B(B)+P(D)
- Q(b);N_GUARD::QAB1(I)
- Q(b);N_GUARD,SBLOCK,XP(G)::S(E),XP(c)
- Q(b);OGATE::B(B)+P(D),XQ(b)
- Q(b);OGATE::P(D),XQ(b)
- Q(b);SBLOCK::S(H)
- Q(b);N_GUARD::QAB1(I),XQ(b)
- S(e);CHECK,N_GUARD::R1(A),XS(e)
- S(e);N_GUARD::QAR1(I),XS(e)
- S(f);N_GUARD::QAB1(I)
- S(f);N_GUARD::QAB1(I),XS(f)
- Tries
- Try
- K(F);S_FLIGHT,XP(a)
- Vars
- Q(b);CHECK,N_GUARD::QAB1(I),XQ(b)
- S(e);CHECK,N_GUARD::R1(A),XS(e)
- Q(b);N_GUARD,SBLOCK,XP(G)::S(E),XP(c)
- S(e);N_GUARD::QAR1(I),XS(e)
- S(f);N_GUARD::QAB1(I),XS(f)
- Q(b);OGATE::B(B)+P(D)
- Q(b);N_GUARD::QAB1(I)
- Q(b);N_GUARD,P_PINS(E)::QAB1(I)
- Q(b);OGATE::B(B)+P(D),XQ(b)
- Q(b);OGATE::P(D),XQ(b)
- Q(b);SBLOCK::S(H)
- S(f);N_GUARD::QAB1(I)
- Refutation
- S(e);CHECK
- Try
- R(A);
- Vars
- S(e);CHECK,N_GUARD::R1(A),XS(e)
- Q(b);N_GUARD,SBLOCK,XP(G)::S(E),XP(c)
- S(e);N_GUARD::QAR1(I),XS(e)
- S(f);N_GUARD::QAB1(I),XS(f)
- Q(b);N_GUARD::QAB1(I)
- Q(b);OGATE::B(B)+P(D)
- Q(b);OGATE::B(B)+P(D),XQ(b)
- Q(b);OGATE::P(D),XQ(b)
- Q(b);SBLOCK::S(H)
- Q(b);N_GUARD::QAB1(I),XQ(b)
- S(f);N_GUARD::QAB1(I)
- Refutation
- P(a);XR(A)
- Try
- R(A);
- Vars
- S(e);CHECK,N_GUARD::R1(A),XS(e)
- Q(b);N_GUARD,SBLOCK,XP(G)::S(E),XP(c)
- S(e);N_GUARD::QAR1(I),XS(e)
- S(f);N_GUARD::QAB1(I),XS(f)
- Q(b);N_GUARD::QAB1(I)
- Q(b);OGATE::B(B)+P(D)
- Q(b);OGATE::B(B)+P(D),XQ(b)
- Q(b);OGATE::P(D),XQ(b)
- Q(b);SBLOCK::S(H)
- Q(b);N_GUARD::QAB1(I),XQ(b)
- S(f);N_GUARD::QAB1(I)
- Refutation
- P(c);CHECK,XR(A)
- Try
- R(A);
- Threat
- DUALS(2)
- Vars
- S(e);CHECK,N_GUARD::R1(A),XS(e)
- Q(b);SBLOCK,XP(G)::S(E),XP(c)
- S(f);N_GUARD::QAB1(I)
- Q(b);::S(H)
- Refutation
- Q(b);XR(A)
- Try
- R(A);
- Vars
- S(e);CHECK,N_GUARD::R1(A),XS(e)
- Q(b);N_GUARD,SBLOCK,XP(G)::S(E),XP(c)
- S(e);N_GUARD::QAR1(I),XS(e)
- S(f);N_GUARD::QAB1(I),XS(f)
- Q(b);OGATE::B(B)+P(D)
- Q(b);N_GUARD::QAB1(I)
- Q(b);OGATE::B(B)+P(D),XQ(b)
- Q(b);OGATE::P(D),XQ(b)
- Q(b);N_GUARD::QAB1(I),XQ(b)
- S(f);N_GUARD::QAB1(I)
- Refutation
- Q(b);
- Try
- Q(I);CHECK,XS(e)
- Refutation
- K(d);S_FLIGHT,XS(H)
- Try
- Actual
- R(A);
- Vars
- S(e);CHECK,N_GUARD::R1(A),XS(e)
- Q(b);OGATE,XR(A)::B(B)+P(D)
- Q(b);N_GUARD,SBLOCK,XP(G)::S(E),XP(c)
- S(e);N_GUARD::QAR1(I),XS(e)
- S(f);N_GUARD::QAB1(I),XS(f)
- Q(b);N_GUARD::QAB1(I)
- Q(b);OGATE::B(B)+P(D)
- Q(b);OGATE::B(B)+P(D),XQ(b)
- Q(b);OGATE::P(D),XQ(b)
- Q(b);SBLOCK::S(H)
- Q(b);N_GUARD::QAB1(I),XQ(b)
- S(f);N_GUARD::QAB1(I)
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).