MESON Chess Problem Database
Problem Display
PID: 152299 (2R5/p1N1NK2/P2pPn2/1P4Q1/P1kq1p2/1p1R4/3BB3/7b w - - 0 1)
Bettmann, Henry Wald
Good Companions (October), 1915
#2
12 + 8
SOLUTION
- SOUND
- Sets
- 1...Qa1
- 2.Scd5#
- 2.Rd5#
- 2.Rxd6#
- 1...Qg1
- 2.Rd5#
- 2.Rxd6#
- 1...Qb2
- 2.Scd5#
- 2.Rd5#
- 2.Rxd6#
- 1...Qc3
- 2.Scd5#
- 1...Qc5
- 2.Rd5#
- 2.Rxd6#
- 1...Qe5
- 2.Scd5#
- 1...Qb6
- 2.Rd5#
- 2.Rxd6#
- 1...Qe4
- 2.Scd5#
- 1...Qd5
- 2.Scxd5#
- 2.Rxd5#
- 1...Qa1
- Tries
- 1.Sa8+?
- 1...Qc5
- 2.Rd5#
- 2.Rxd6#
- 1...Bc6!
- 1...Qc5
- 1.Se8+?
- 1...Qc5
- 2.Sxd6#
- 2.Rd5#
- 2.Rxd6#
- 1...Bc6!
- 1...Qc5
- 1.Rxb3+?
- 1...Qd3
- 2.Rb4#
- 1...Kxb3!
- 1...Qd3
- 1.Qxf6?
- threat
- 2.Qxd4#
- 1...Kc5
- 2.Scd5#
- 2.Qxd4#
- 1...Qxd3
- 2.Scd5#
- 2.Qc3#
- 1...Qc3
- 2.Scd5#
- 2.Qxc3#
- 1...Qa1
- 2.Scd5#
- 2.Rd5#
- 1...Qg1
- 2.Rd5#
- 2.Qc3#
- 1...Qb2
- 2.Scd5#
- 2.Rd5#
- 1...Qf2
- 2.Qc3#
- 1...Qe3
- 2.Qc3#
- 1...Qc5
- 2.Re3#
- 2.Rf3#
- 2.Rg3#
- 2.Rh3#
- 2.Rd4#
- 2.Rd5#
- 2.Rxd6#
- 2.Qc3#
- 1...Qe5
- 2.Scd5#
- 1...Qb6
- 2.Rd5#
- 2.Qc3#
- 1...Qe4
- 2.Scd5#
- 2.Qc3#
- 1...Qd5
- 2.Scxd5#
- 2.Rxd5#
- 2.Qc3#
- 1...Qxf6+!
- threat
- 1.Qc5+?
- 1...Kxc5
- 2.Scd5#
- 1...Qxc5
- 2.Rd5#
- 2.Rxd6#
- 1...dxc5!
- 1...Kxc5
- 1.Qe5?
- threat
- 2.Rxd4#
- 2.Qxd4#
- 1...Qxe5
- 2.Scd5#
- 1...Qxd3
- 2.Scd5#
- 2.Qc3#
- 1...Qc3
- 2.Scd5#
- 2.Rd4#
- 2.Qxc3#
- 1...Qd5
- 2.Scxd5#
- 2.Rxd5#
- 2.Qc3#
- 1...Bd5
- 2.Qxd4#
- 1...Sd5
- 2.Qxd4#
- 1...d5
- 2.Qxd4#
- 1...Qa1
- 2.Scd5#
- 2.Re3#
- 2.Rf3#
- 2.Rg3#
- 2.Rh3#
- 2.Rd4#
- 2.Rd5#
- 2.Rxd6#
- 1...Qg1
- 2.Re3#
- 2.Rf3#
- 2.Rg3#
- 2.Rh3#
- 2.Rd4#
- 2.Rd5#
- 2.Rxd6#
- 2.Qc3#
- 1...Qb2
- 2.Scd5#
- 2.Re3#
- 2.Rf3#
- 2.Rg3#
- 2.Rh3#
- 2.Rd4#
- 2.Rd5#
- 2.Rxd6#
- 1...Qf2
- 2.Rd4#
- 2.Qc3#
- 1...Qe3
- 2.Rxe3#
- 2.Rd4#
- 2.Qc3#
- 1...Qc5
- 2.Re3#
- 2.Rf3#
- 2.Rg3#
- 2.Rh3#
- 2.Rd4#
- 2.Rd5#
- 2.Rxd6#
- 2.Qc3#
- 1...Qb6
- 2.Re3#
- 2.Rf3#
- 2.Rg3#
- 2.Rh3#
- 2.Rd4#
- 2.Rd5#
- 2.Rxd6#
- 2.Qc3#
- 1...Qe4
- 2.Scd5#
- 2.Rd4#
- 2.Qc3#
- 1...b2
- 2.Qxd4#
- 1...dxe5!
- threat
- 1.Sa8+?
- Keys
- 1.Qg1!
- threat
- 2.Qxd4#
- 1...Kc5
- 2.Scd5#
- 2.Qxd4#
- 1...Qxg1
- 2.Rd5#
- 1...Qxd3
- 2.Scd5#
- 1...Qa1
- 2.Scd5#
- 2.Rf3#
- 2.Rg3#
- 2.Rh3#
- 2.Rd5#
- 2.Rxd6#
- 1...Qb2
- 2.Scd5#
- 2.Rf3#
- 2.Rg3#
- 2.Rh3#
- 2.Rd5#
- 2.Rxd6#
- 1...Qf2
- 2.Qc1#
- 1...Qc3
- 2.Scd5#
- 1...Qe3
- 2.Qc1#
- 1...Qc5
- 2.Rf3#
- 2.Rg3#
- 2.Rh3#
- 2.Rd4#
- 2.Rd5#
- 2.Rxd6#
- 2.Qc1#
- 1...Qe5
- 2.Scd5#
- 1...Qb6
- 2.Rf3#
- 2.Rg3#
- 2.Rh3#
- 2.Rd5#
- 2.Rxd6#
- 2.Qc1#
- 1...Qe4
- 2.Scd5#
- 2.Qc1#
- 1...Qd5
- 2.Scxd5#
- 2.Rxd5#
- 2.Qc1#
- threat
- 1.Qg1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 1
- Sets
- Q(d);N_GUARD::R(L)+S(I)
- Tries
- Try
- S(I);CHECK
- Refutation
- B(a);P_SPINB(a)
- Try
- S(I);CHECK
- Refutation
- B(a);P_SPINB(a)
- Try
- R(C);CHECK,XP(b)
- Vars
- Q(d);P_SPINQ(d)::R1(C)
- Refutation
- K(c);S_FLIGHT,XR(C)
- Try
- Q(F);XS(g)
- Threat
- QAR1(F),XQ(d)
- Vars
- Q(d);OGATE::QAR1(F)
- Q(d);N_GUARD::R(L)+S(I)
- Refutation
- Q(d);CHECK,XQ(F)
- Try
- Q(F);CHECK
- Vars
- K(c);P-FLIGHT,XQ(F)::R(L)+S(I)
- Refutation
- P(f);XQ(F)
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- Q(d);N_GUARD,XQ(F)::R(L)+S(I)
- B(a);P_PINP(H)::QAR1(F),XQ(d)
- S(g);::QAR1(F),XQ(d)
- P(f);::QAR1(F),XQ(d)
- P(b);::QAR1(F),XQ(d)
- Refutation
- P(f);XQ(F)
- Try
- Actual
- Q(F);
- Threat
- QAR1(F),XQ(d)
- Vars
- Q(d);OGATE,XQ(F)::B(B)+R(C)
- Q(d);N_GUARD,P_SPINQ(d),XR(C)::R(L)+S(I)
- Q(d);N_GUARD::QAR(F)
- Q(d);N_GUARD::R(L)+S(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).