MESON Chess Problem Database
Problem Display
PID: 6815 (8/1n1N4/4Q1K1/5N2/1P1P2n1/r1bk1P2/2R5/3BBb2 w - - 0 1)
Warton, Joseph John
Sunday Times, 1933
#2
10 + 6
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Rxc3#
- 1...Ra2
- 2.Rxc3#
- 1...Rb3
- 2.Qa6#
- 1...Ra4
- 2.Rxc3#
- 1...Ra5
- 2.Rxc3#
- 1...Ra6
- 2.Rxc3#
- 2.Qxa6#
- 1...Ra7
- 2.Rxc3#
- 1...Ra8
- 2.Rxc3#
- 1...Be2
- 2.Qxe2#
- 1...Bg2
- 2.Qe2#
- 1...Bh3
- 2.Qe2#
- 1...Ba1
- 2.Qc4#
- 2.Qe4#
- 1...Bxe1
- 2.Qc4#
- 2.Qe4#
- 1...Bb2
- 2.Qc4#
- 2.Qe4#
- 1...Bd2
- 2.Qc4#
- 2.Qe4#
- 1...Bxb4
- 2.Qc4#
- 2.Qe4#
- 1...Bxd4
- 2.Qc4#
- 2.Qe4#
- 1...Sf2
- 2.Se5#
- 1...Sh2
- 2.Se5#
- 1...Se3
- 2.Se5#
- 1...Se5+
- 2.Sxe5#
- 1...Sf6
- 2.Se5#
- 1...Sh6
- 2.Se5#
- 1...Sa5
- 2.Sc5#
- 1...Sc5
- 2.Sxc5#
- 1...Sd6
- 2.Sc5#
- 1...Sd8
- 2.Sc5#
- 1...Ra1
- Tries
- 1.Kg5?
- 1...Bxe1
- 2.Qc4#
- 2.Qe4#
- 1...Bxb4
- 2.Qc4#
- 2.Qe4#
- 1...Bxd4
- 2.Qc4#
- 2.Qe4#
- 1...Ra1
- 2.Rxc3#
- 1...Ra2
- 2.Rxc3#
- 1...Rb3
- 2.Qa6#
- 1...Ra4
- 2.Rxc3#
- 1...Ra5
- 2.Rxc3#
- 1...Ra6
- 2.Rxc3#
- 2.Qxa6#
- 1...Ra7
- 2.Rxc3#
- 1...Ra8
- 2.Rxc3#
- 1...Be2
- 2.Qxe2#
- 1...Bg2
- 2.Qe2#
- 1...Bh3
- 2.Qe2#
- 1...Ba1
- 2.Qc4#
- 2.Qe4#
- 1...Bb2
- 2.Qc4#
- 2.Qe4#
- 1...Sf2
- 2.Se5#
- 1...Sh2
- 2.Se5#
- 1...Se3
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Sf6
- 2.Se5#
- 1...Sh6
- 2.Se5#
- 1...Sa5
- 2.Sc5#
- 1...Sc5
- 2.Sxc5#
- 1...Sd6
- 2.Sc5#
- 1...Sd8
- 2.Sc5#
- 1...Bd2+!
- 1...Bxe1
- 1.Kh5?
- 1...Bxe1
- 2.Qc4#
- 2.Qe4#
- 1...Bxb4
- 2.Qc4#
- 2.Qe4#
- 1...Bxd4
- 2.Qc4#
- 2.Qe4#
- 1...Ra1
- 2.Rxc3#
- 1...Ra2
- 2.Rxc3#
- 1...Rb3
- 2.Qa6#
- 1...Ra4
- 2.Rxc3#
- 1...Ra5
- 2.Rxc3#
- 1...Ra6
- 2.Rxc3#
- 2.Qxa6#
- 1...Ra7
- 2.Rxc3#
- 1...Ra8
- 2.Rxc3#
- 1...Be2
- 2.Qxe2#
- 1...Bg2
- 2.Qe2#
- 1...Bh3
- 2.Qe2#
- 1...Ba1
- 2.Qc4#
- 2.Qe4#
- 1...Bb2
- 2.Qc4#
- 2.Qe4#
- 1...Bd2
- 2.Qc4#
- 2.Qe4#
- 1...Sf2
- 2.Se5#
- 1...Sh2
- 2.Se5#
- 1...Se3
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Sh6
- 2.Se5#
- 1...Sa5
- 2.Sc5#
- 1...Sc5
- 2.Sxc5#
- 1...Sd6
- 2.Sc5#
- 1...Sd8
- 2.Sc5#
- 1...Sf6+!
- 1...Bxe1
- 1.Kg7?
- 1...Bxe1
- 2.Qc4#
- 2.Qe4#
- 1...Bxb4
- 2.Qc4#
- 2.Qe4#
- 1...Ra1
- 2.Rxc3#
- 1...Ra2
- 2.Rxc3#
- 1...Rb3
- 2.Qa6#
- 1...Ra4
- 2.Rxc3#
- 1...Ra5
- 2.Rxc3#
- 1...Ra6
- 2.Rxc3#
- 2.Qxa6#
- 1...Ra7
- 2.Rxc3#
- 1...Ra8
- 2.Rxc3#
- 1...Be2
- 2.Qxe2#
- 1...Bg2
- 2.Qe2#
- 1...Bh3
- 2.Qe2#
- 1...Ba1
- 2.Qc4#
- 2.Qe4#
- 1...Bb2
- 2.Qc4#
- 2.Qe4#
- 1...Bd2
- 2.Qc4#
- 2.Qe4#
- 1...Sf2
- 2.Se5#
- 1...Sh2
- 2.Se5#
- 1...Se3
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Sf6
- 2.Se5#
- 1...Sh6
- 2.Se5#
- 1...Sa5
- 2.Sc5#
- 1...Sc5
- 2.Sxc5#
- 1...Sd6
- 2.Sc5#
- 1...Sd8
- 2.Sc5#
- 1...Bxd4+!
- 1...Bxe1
- 1.Kh7?
- 1...Bxe1
- 2.Qc4#
- 2.Qe4#
- 1...Bxb4
- 2.Qc4#
- 2.Qe4#
- 1...Bxd4
- 2.Qc4#
- 2.Qe4#
- 1...Ra1
- 2.Rxc3#
- 1...Ra2
- 2.Rxc3#
- 1...Rb3
- 2.Qa6#
- 1...Ra4
- 2.Rxc3#
- 1...Ra5
- 2.Rxc3#
- 1...Ra6
- 2.Rxc3#
- 2.Qxa6#
- 1...Ra7
- 2.Rxc3#
- 1...Ra8
- 2.Rxc3#
- 1...Be2
- 2.Qxe2#
- 1...Bg2
- 2.Qe2#
- 1...Bh3
- 2.Qe2#
- 1...Ba1
- 2.Qc4#
- 2.Qe4#
- 1...Bb2
- 2.Qc4#
- 2.Qe4#
- 1...Bd2
- 2.Qc4#
- 2.Qe4#
- 1...Sf2
- 2.Se5#
- 1...Sh2
- 2.Se5#
- 1...Se3
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Sh6
- 2.Se5#
- 1...Sa5
- 2.Sc5#
- 1...Sc5
- 2.Sxc5#
- 1...Sd6
- 2.Sc5#
- 1...Sd8
- 2.Sc5#
- 1...Sf6+!
- 1...Bxe1
- 1.Be2+?
- 1...Bxe2
- 2.Qxe2#
- 1...Kxc2!
- 1...Bxe2
- 1.Rc1?
- threat
- 2.Bc2#
- 1...Se5+
- 2.Sxe5#
- 1...Ra2
- 2.Rxc3#
- 1...Bd2
- 2.Qc4#
- 2.Qe4#
- 1...Se3
- 2.Se5#
- 1...Bxe1!
- threat
- 1.Qd5?
- threat
- 2.Qb5#
- 1...Se5+
- 2.Sxe5#
- 1...Ra5
- 2.Rxc3#
- 1...Se3
- 2.Se5#
- 1...Sa5
- 2.Sc5#
- 1...Sc5
- 2.Sxc5#
- 1...Sd6
- 2.Sc5#
- 1...Ra6+!
- threat
- 1.Qe3+?
- 1...Sxe3
- 2.Se5#
- 1...Kc4!
- 1...Sxe3
- 1.b5?
- 1...Se5+
- 2.Sxe5#
- 1...Bxe1
- 2.Qc4#
- 2.Qe4#
- 1...Bxd4
- 2.Qc4#
- 2.Qe4#
- 1...Ra1
- 2.Rxc3#
- 1...Ra2
- 2.Rxc3#
- 1...Ra4
- 2.Rxc3#
- 1...Ra5
- 2.Rxc3#
- 1...Ra6
- 2.Rxc3#
- 1...Ra7
- 2.Rxc3#
- 1...Ra8
- 2.Rxc3#
- 1...Be2
- 2.Qxe2#
- 1...Bg2
- 2.Qe2#
- 1...Bh3
- 2.Qe2#
- 1...Ba1
- 2.Qc4#
- 2.Qe4#
- 1...Bb2
- 2.Qc4#
- 2.Qe4#
- 1...Bd2
- 2.Qc4#
- 2.Qe4#
- 1...Bb4
- 2.Qc4#
- 2.Qe4#
- 1...Ba5
- 2.Qc4#
- 2.Qe4#
- 1...Sf2
- 2.Se5#
- 1...Sh2
- 2.Se5#
- 1...Se3
- 2.Se5#
- 1...Sf6
- 2.Se5#
- 1...Sh6
- 2.Se5#
- 1...Sa5
- 2.Sc5#
- 1...Sc5
- 2.Sxc5#
- 1...Sd6
- 2.Sc5#
- 1...Sd8
- 2.Sc5#
- 1...Rb3!
- 1...Se5+
- 1.Kg5?
- Keys
- 1.Qa2!
- 1...Ra6+
- 2.Qxa6#
- 1...Se5+
- 2.Sxe5#
- 1...Rxa2
- 2.Rxc3#
- 1...Bxe1
- 2.Qc4#
- 1...Bxb4
- 2.Qc4#
- 1...Bxd4
- 2.Qc4#
- 1...Rb3
- 2.Qa6#
- 1...Ra4
- 2.Rxc3#
- 1...Ra5
- 2.Rxc3#
- 1...Ra7
- 2.Rxc3#
- 1...Ra8
- 2.Rxc3#
- 1...Be2
- 2.Bxe2#
- 1...Bg2
- 2.Be2#
- 1...Bh3
- 2.Be2#
- 1...Ba1
- 2.Qc4#
- 1...Bb2
- 2.Qc4#
- 1...Bd2
- 2.Qc4#
- 1...Sf2
- 2.Se5#
- 1...Sh2
- 2.Se5#
- 1...Se3
- 2.Se5#
- 1...Sf6
- 2.Se5#
- 1...Sh6
- 2.Se5#
- 1...Sa5
- 2.Sc5#
- 1...Sc5
- 2.Sxc5#
- 1...Sd6
- 2.Sc5#
- 1...Sd8
- 2.Sc5#
- 1...Ra6+
- 1.Qa2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 3
- ADDED MATES = 7
- REMOVED MATES = 1
- Sets
- R(b);N_GUARD::R1(C),XB(c)
- R(b);N_GUARD::QAB(H)
- B(a);N_GUARD::QAB1(H),XB(a)
- B(a);N_GUARD::QAB1(H)
- S(e);N_GUARD::S(J)
- S(e);CHECK,N_GUARD::S(J),XS(e)
- S(f);N_GUARD::S(J)
- S(f);N_GUARD::S(J),XS(f)
- Tries
- Try
- K(I);P-FLIGHT
- Vars
- R(b);N_GUARD::R1(C),XB(c)
- R(b);N_GUARD::QAB(H)
- R(b);N_GUARD,P_PINS(G)::R1(C),XB(c)
- B(a);N_GUARD::QAB1(H),XB(a)
- B(a);N_GUARD::QAB1(H)
- S(e);N_GUARD::S(J)
- S(e);N_GUARD::S(J),XS(e)
- S(f);N_GUARD::S(J)
- S(f);N_GUARD::S(J),XS(f)
- Refutation
- B(c);CHECK
- Try
- K(I);S_FLIGHT
- Vars
- R(b);N_GUARD::R1(C),XB(c)
- R(b);N_GUARD::QAB(H)
- R(b);N_GUARD,P_PINS(G)::R1(C),XB(c)
- B(a);N_GUARD::QAB1(H),XB(a)
- B(a);N_GUARD::QAB1(H)
- S(e);N_GUARD::S(J)
- S(e);N_GUARD::S(J),XS(e)
- S(f);N_GUARD::S(J)
- S(f);N_GUARD::S(J),XS(f)
- Refutation
- S(e);CHECK
- Try
- K(I);P-FLIGHT,P_SPINP(F)
- Vars
- R(b);N_GUARD::R1(C),XB(c)
- R(b);N_GUARD::QAB(H)
- B(a);N_GUARD::QAB1(H),XB(a)
- B(a);N_GUARD::QAB1(H)
- S(e);N_GUARD::S(J)
- S(e);N_GUARD,N_PINP(F)::S(J),XS(e)
- S(e);N_GUARD,N_PINP(F)::S(J)
- S(f);N_GUARD::S(J)
- S(f);N_GUARD::S(J),XS(f)
- Refutation
- B(c);CHECK,XP(F)
- Try
- K(I);S_FLIGHT
- Vars
- R(b);N_GUARD::R1(C),XB(c)
- R(b);N_GUARD::QAB(H)
- B(a);N_GUARD::QAB1(H),XB(a)
- B(a);N_GUARD::QAB1(H)
- S(e);N_GUARD::S(J)
- S(e);N_GUARD::S(J),XS(e)
- S(f);N_GUARD::S(J)
- S(f);N_GUARD::S(J),XS(f)
- Refutation
- S(e);CHECK
- Try
- B(A);CHECK
- Vars
- B(a);OGATE,XB(A)::QAB1(H),XB(a)
- Refutation
- K(d);S_FLIGHT,XR(C)
- Try
- R(C);
- Threat
- B(A)
- Vars
- S(e);CHECK,N_GUARD::S(J),XS(e)
- R(b);N_GUARD::R1(C),XB(c)
- S(e);N_GUARD::S(J)
- Refutation
- B(c);XB(B)
- Try
- Q(H);
- Threat
- QAB(H)
- Vars
- S(e);CHECK,N_GUARD::S(J),XS(e)
- R(b);N_GUARD::R1(C),XB(c)
- S(e);N_GUARD::S(J)
- S(f);N_GUARD::S(J)
- S(f);N_GUARD::S(J),XS(f)
- Refutation
- R(b);CHECK
- Try
- Q(H);CHECK
- Vars
- S(e);XQ(H)::S(J)
- Refutation
- K(d);P_SPINB(c),S_FLIGHT
- Try
- P(E);
- Vars
- S(e);CHECK,N_GUARD::S(J),XS(e)
- R(b);N_GUARD::R1(C),XB(c)
- R(b);N_GUARD,P_PINQ(H)::R1(C),XB(c)
- B(a);N_GUARD::QAB1(H),XB(a)
- B(a);N_GUARD::QAB1(H)
- S(e);N_GUARD::S(J)
- S(f);N_GUARD::S(J)
- S(f);N_GUARD::S(J),XS(f)
- Refutation
- R(b);
- Try
- Actual
- Q(H);
- Vars
- R(b);CHECK,OGATE::QAB(H),XR(b)
- S(e);CHECK,N_GUARD::S(J),XS(e)
- R(b);N_GUARD,XQ(H)::R1(C),XB(c)
- B(c);XB(B)::QAB1(H)
- B(c);XP(E)::QAB1(H)
- B(c);XP(F)::QAB1(H)
- R(b);OGATE::QAB(H)
- R(b);N_GUARD::R1(C),XB(c)
- B(a);N_GUARD::B(A),XB(a)
- B(a);N_GUARD::B(A)
- B(c);::QAB1(H)
- S(e);N_GUARD::S(J)
- S(f);N_GUARD::S(J)
- S(f);N_GUARD::S(J),XS(f)
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).