MESON Chess Problem Database
Problem Display
PID: 186156 (8/2Q5/2pR1B2/4r3/rRN1k1b1/3N3n/2BK2P1/8 w - - 0 1)
Barnes, Barry Peter
Chess, 1959
#2
9 + 6
SOLUTION
- SOUND
- Sets
- 1...Kf5
- 2.Qh7#
- 1...Ra1
- 2.Se3#
- 1...Ra2
- 2.Se3#
- 1...Ra3
- 2.Se3#
- 1...Raa5
- 2.Se3#
- 1...Ra6
- 2.Se3#
- 1...Ra7
- 2.Se3#
- 1...Ra8
- 2.Se3#
- 1...Rf5
- 2.Rd4#
- 1...Sf4
- 2.Sf2#
- 2.Sc5#
- 1...Kf5
- Tries
- 1.Scb2+?
- 1...Kf5
- 2.Sxe5#
- 2.Qh7#
- 1...Rxb4!
- 1...Kf5
- 1.Sa3+?
- 1...Kf5
- 2.Sxe5#
- 2.Qh7#
- 1...Rxb4!
- 1...Kf5
- 1.Sa5+?
- 1...Kf5
- 2.Sxe5#
- 2.Qh7#
- 1...Rxb4!
- 1...Kf5
- 1.Scxe5+?
- 1...Kf5
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sf2#
- 2.Sf4#
- 2.Sc5#
- 2.Qd7#
- 2.Qh7#
- 2.Qc8#
- 1...Rxb4!
- 1...Kf5
- 1.Sb6+?
- 1...Kf5
- 2.Sxe5#
- 2.Qh7#
- 1...Rxb4!
- 1...Kf5
- 1.Bxe5?
- threat
- 2.Sc1#
- 2.Se1#
- 2.Sdb2#
- 2.Sf2#
- 2.Sf4#
- 2.Sc5#
- 1...Ra2
- 2.Sdb2#
- 2.Sf2#
- 2.Sc5#
- 2.Se3#
- 1...Ra3
- 2.Sf2#
- 2.Sc5#
- 2.Se3#
- 1...Bd1
- 2.Sf2#
- 2.Sc5#
- 2.Qh7#
- 1...Be2
- 2.Sf2#
- 2.Sc5#
- 2.Qh7#
- 1...Sf2
- 2.Sxf2#
- 2.Sc5#
- 1...Sf4
- 2.Sf2#
- 2.Sxf4#
- 2.Sc5#
- 1...c5
- 2.Sc1#
- 2.Se1#
- 2.Sdb2#
- 2.Sf2#
- 2.Sf4#
- 2.Sxc5#
- 1...Kf5!
- threat
- 1.Rd4+?
- 1...Kxd4
- 2.Qxe5#
- 1...Kf5!
- 1...Kxd4
- 1.Rd5?
- threat
- 2.Qxe5#
- 1...Kxd5
- 2.Qxe5#
- 1...Rxd5
- 2.Sd6#
- 1...Rf5
- 2.Sf4#
- 2.Rd4#
- 1...Rg5
- 2.Sf4#
- 1...Rh5
- 2.Sf4#
- 1...Re6
- 2.Sf4#
- 1...Re7
- 2.Sf4#
- 1...Re8
- 2.Sf4#
- 1...Kf5!
- threat
- 1.Re6?
- threat
- 2.Qxe5#
- 1...Kd4
- 2.Qxe5#
- 1...Kd5
- 2.Qxe5#
- 1...Rxe6
- 2.Sf4#
- 1...Ra5
- 2.Se3#
- 1...Kf5!
- threat
- 1.Rd7?
- threat
- 2.Qxe5#
- 1...Raa5
- 2.Se3#
- 1...Rea5
- 2.Sc1#
- 2.Se1#
- 2.Sdb2#
- 2.Sf2#
- 2.Sf4#
- 2.Sc5#
- 1...Rb5
- 2.Sc1#
- 2.Se1#
- 2.Sdb2#
- 2.Sf2#
- 2.Sf4#
- 2.Sc5#
- 1...Rc5
- 2.Sc1#
- 2.Se1#
- 2.Sdb2#
- 2.Sf2#
- 2.Sf4#
- 2.Sxc5#
- 1...Rd5
- 2.Sd6#
- 1...Rf5
- 2.Sc1#
- 2.Se1#
- 2.Sdb2#
- 2.Sf2#
- 2.Sf4#
- 2.Sc5#
- 2.Rd4#
- 1...Rg5
- 2.Sc1#
- 2.Se1#
- 2.Sdb2#
- 2.Sf2#
- 2.Sf4#
- 2.Sc5#
- 1...Rh5
- 2.Sc1#
- 2.Se1#
- 2.Sdb2#
- 2.Sf2#
- 2.Sf4#
- 2.Sc5#
- 1...Re6
- 2.Sc1#
- 2.Se1#
- 2.Sdb2#
- 2.Sf2#
- 2.Sf4#
- 2.Sc5#
- 1...Re7
- 2.Sc1#
- 2.Se1#
- 2.Sdb2#
- 2.Sf2#
- 2.Sf4#
- 2.Sc5#
- 1...Re8
- 2.Sc1#
- 2.Se1#
- 2.Sdb2#
- 2.Sf2#
- 2.Sf4#
- 2.Sc5#
- 1...Kf5!
- threat
- 1.Rd8?
- threat
- 2.Qxe5#
- 1...Raa5
- 2.Se3#
- 1...Rea5
- 2.Sc1#
- 2.Se1#
- 2.Sdb2#
- 2.Sf2#
- 2.Sf4#
- 2.Sc5#
- 1...Rb5
- 2.Sc1#
- 2.Se1#
- 2.Sdb2#
- 2.Sf2#
- 2.Sf4#
- 2.Sc5#
- 1...Rc5
- 2.Sc1#
- 2.Se1#
- 2.Sdb2#
- 2.Sf2#
- 2.Sf4#
- 2.Sxc5#
- 1...Rd5
- 2.Sd6#
- 1...Rf5
- 2.Sc1#
- 2.Se1#
- 2.Sdb2#
- 2.Sf2#
- 2.Sf4#
- 2.Sc5#
- 2.Rd4#
- 1...Rg5
- 2.Sc1#
- 2.Se1#
- 2.Sdb2#
- 2.Sf2#
- 2.Sf4#
- 2.Sc5#
- 1...Rh5
- 2.Sc1#
- 2.Se1#
- 2.Sdb2#
- 2.Sf2#
- 2.Sf4#
- 2.Sc5#
- 1...Re6
- 2.Sc1#
- 2.Se1#
- 2.Sdb2#
- 2.Sf2#
- 2.Sf4#
- 2.Sc5#
- 1...Re7
- 2.Sc1#
- 2.Se1#
- 2.Sdb2#
- 2.Sf2#
- 2.Sf4#
- 2.Sc5#
- 1...Re8
- 2.Sc1#
- 2.Se1#
- 2.Sdb2#
- 2.Sf2#
- 2.Sf4#
- 2.Sc5#
- 1...Kf5!
- threat
- 1.Qxc6+?
- 1...Rd5
- 2.Qxd5#
- 1...Kf5!
- 1...Rd5
- 1.Qh7+?
- 1...Rf5
- 2.Rd4#
- 1...Bf5!
- 1...Rf5
- 1.Scb2+?
- Keys
- 1.Rxc6!
- threat
- 2.Qxe5#
- 1...Kd4
- 2.Qxe5#
- 1...Kd5
- 2.Sb6#
- 1...Kf5
- 2.Qh7#
- 1...Raa5
- 2.Se3#
- 1...Rea5
- 2.Sf4#
- 1...Rb5
- 2.Sf4#
- 1...Rc5
- 2.Sf4#
- 1...Rd5
- 2.Sd6#
- 1...Rf5
- 2.Sf4#
- 1...Rg5
- 2.Sf4#
- 1...Rh5
- 2.Sf4#
- 1...Re6
- 2.Sf4#
- 1...Re7
- 2.Sf4#
- 1...Re8
- 2.Sf4#
- threat
- 1.Rxc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 11
- REMOVED MATES = 6
- Sets
- K(c);S_FLIGHT::QAB(I)
- R(b);N_GUARD::R(E)+S(F)
- R(b);N_GUARD,P_PINB(A)::R(E)+S(F)
- R(e);SBLOCK::R1(G)
- Tries
- Try
- S(F);CHECK
- Refutation
- R(b);XR(E)
- Try
- S(F);CHECK
- Refutation
- R(b);XR(E)
- Try
- S(F);CHECK
- Refutation
- R(b);XR(E)
- Try
- S(F);CHECK,XR(e)
- Refutation
- R(b);XR(E)
- Try
- S(F);CHECK
- Refutation
- R(b);XR(E)
- Try
- B(H);XR(e)
- Threat
- DUALS(6)
- Refutation
- K(c);S_FLIGHT
- Try
- R(G);CHECK
- Vars
- K(c);P-FLIGHT,P_SPINR(e),XR(G)::QAB1(I),XR(e)
- Refutation
- K(c);S_FLIGHT
- Try
- R(G);
- Threat
- QAR1(I),XR(e)
- Vars
- K(c);S_FLIGHT,XR(G)::QAR1(I),XR(e)
- R(e);P_PINS(D),SBLOCK,XR(G)::R(E)+S(F),DCHECK
- R(e);::B(A)+S(D)
- Refutation
- K(c);P_SPINR(e),S_FLIGHT
- Try
- R(G);P_PINR(e)
- Threat
- QAR1(I),XR(e)
- Vars
- K(c);P-FLIGHT::QAB1(I),XR(e)
- K(c);N_SPINR(e),S_FLIGHT::QAR1(I),XR(e)
- R(e);N_SPINR(e),XR(G)::B(A)+S(D)
- R(b);N_GUARD::R(E)+S(F)
- Refutation
- K(c);N_SPINR(e),S_FLIGHT
- Try
- R(G);
- Threat
- QAR1(I),XR(e)
- Vars
- R(b);N_GUARD::R(E)+S(F)
- R(e);P_PINS(D),SBLOCK::R(E)+S(F),DCHECK
- Refutation
- K(c);S_FLIGHT
- Try
- R(G);
- Threat
- QAR1(I),XR(e)
- Vars
- R(b);N_GUARD::R(E)+S(F)
- R(e);P_PINS(D),SBLOCK::R(E)+S(F),DCHECK
- Refutation
- K(c);S_FLIGHT
- Try
- Q(I);CHECK,XP(f)
- Vars
- R(e);N_GUARD,P_PINS(D),P_SPINR(e)::QAB1(I),XR(e)
- Refutation
- K(c);S_FLIGHT
- Try
- Q(I);CHECK
- Vars
- R(e);P_SPINR(e)::R1(G)
- Refutation
- B(d);P_SPINB(d)
- Try
- Actual
- R(G);XP(f)
- Threat
- QAR1(I),XR(e)
- Vars
- K(c);P-FLIGHT,P_SPINR(e)::QAB1(I),XR(e)
- K(c);S_FLIGHT::S(F)
- K(c);S_FLIGHT::QAB(I)
- R(b);N_GUARD::R(E)+S(F)
- R(e);::B(A)+S(D)
- R(e);P_PINS(D),SBLOCK::R(E)+S(F),DCHECK
- R(e);SBLOCK::B(A)+S(D)
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).