MESON Chess Problem Database
Problem Display
PID: 51033 (7Q/8/N1P5/3B4/8/8/rPK4p/k7 w - - 0 1)
Williams, Philip Hamilton
The Inquirer, 1913
#2
6 + 3
SOLUTION
- SOUND
- Sets
- 1...Rxb2+
- 2.Qxb2#
- 1...Ra3
- 2.bxa3#
- 1...Ra4
- 2.b4#
- 1...Ra5
- 2.b4#
- 1...Rxa6
- 2.b4#
- 1...h1Q
- 2.Qxh1#
- 1...h1S
- 2.Qxh1#
- 1...h1B
- 2.Qxh1#
- 1...h1R
- 2.Qxh1#
- 1...Rxb2+
- Tries
- 1.Sb4?
- 1...Rxb2+
- 2.Qxb2#
- 1...h1Q
- 2.Qxh1#
- 1...h1S
- 2.Qxh1#
- 1...h1B
- 2.Qxh1#
- 1...h1R
- 2.Qxh1#
- 1...Ra3
- 2.bxa3#
- 2.b3#
- 1...Ra4
- 2.b3#
- 1...Ra5
- 2.b3#
- 1...Ra6
- 2.b3#
- 1...Ra8
- 2.Qxa8#
- 1...Ra7!
- 1...Rxb2+
- 1.Sc5?
- threat
- 2.Sb3#
- 1...Rxb2+
- 2.Qxb2#
- 1...Ra3
- 2.bxa3#
- 1...Ra4
- 2.b4#
- 1...Ra5
- 2.b4#
- 1...Ra6
- 2.b4#
- 1...Ra8
- 2.Qxa8#
- 1...Ra7!
- threat
- 1.Sb8?
- 1...Rxb2+
- 2.Qxb2#
- 1...h1Q
- 2.Qxh1#
- 1...h1S
- 2.Qxh1#
- 1...h1B
- 2.Qxh1#
- 1...h1R
- 2.Qxh1#
- 1...Ra3
- 2.bxa3#
- 1...Ra4
- 2.b4#
- 1...Ra5
- 2.b4#
- 1...Ra6
- 2.b4#
- 1...Ra8
- 2.b4#
- 1...Ra7!
- 1...Rxb2+
- 1.Bc4?
- 1...Rxb2+
- 2.Qxb2#
- 1...Rxa6
- 2.b4#
- 1...h1Q
- 2.Qxh1#
- 1...h1S
- 2.Qxh1#
- 1...h1B
- 2.Qxh1#
- 1...h1R
- 2.Qxh1#
- 1...Ra3
- 2.bxa3#
- 1...Ra4
- 2.b4#
- 1...Ra5!
- 1...Rxb2+
- 1.Be6?
- 1...Rxb2+
- 2.Qxb2#
- 1...Rxa6
- 2.b4#
- 1...h1Q
- 2.Qxh1#
- 1...h1S
- 2.Qxh1#
- 1...h1B
- 2.Qxh1#
- 1...h1R
- 2.Qxh1#
- 1...Ra3
- 2.bxa3#
- 1...Ra4
- 2.b4#
- 1...Ra5!
- 1...Rxb2+
- 1.Bf7?
- 1...Rxb2+
- 2.Qxb2#
- 1...Rxa6
- 2.b4#
- 1...h1Q
- 2.Qxh1#
- 1...h1S
- 2.Qxh1#
- 1...h1B
- 2.Qxh1#
- 1...h1R
- 2.Qxh1#
- 1...Ra3
- 2.bxa3#
- 1...Ra4
- 2.b4#
- 1...Ra5!
- 1...Rxb2+
- 1.Bg8?
- 1...Rxb2+
- 2.Qxb2#
- 1...Rxa6
- 2.b4#
- 1...h1Q
- 2.Qxh1#
- 1...h1S
- 2.Qxh1#
- 1...h1B
- 2.Qxh1#
- 1...h1R
- 2.Qxh1#
- 1...Ra3
- 2.bxa3#
- 1...Ra4
- 2.b4#
- 1...Ra5!
- 1...Rxb2+
- 1.Qh3?
- threat
- 2.Qf1#
- 1...h1Q
- 2.Qxh1#
- 1...h1R
- 2.Qxh1#
- 1...Rxb2+!
- threat
- 1.Qh4?
- threat
- 2.Qe1#
- 1...h1Q
- 2.Qxh1#
- 1...h1R
- 2.Qxh1#
- 1...Rxb2+!
- threat
- 1.Qh5?
- threat
- 2.Qd1#
- 1...h1Q
- 2.Qxh1#
- 1...h1R
- 2.Qxh1#
- 1...Rxb2+!
- threat
- 1.Qh6?
- threat
- 2.Qc1#
- 1...h1Q
- 2.Qxh1#
- 1...h1R
- 2.Qxh1#
- 1...Rxb2+!
- threat
- 1.c7?
- 1...Rxb2+
- 2.Qxb2#
- 1...h1Q
- 2.Qxh1#
- 1...h1S
- 2.Qxh1#
- 1...h1B
- 2.Qxh1#
- 1...h1R
- 2.Qxh1#
- 1...Ra3
- 2.bxa3#
- 1...Ra4
- 2.b4#
- 1...Ra5
- 2.b4#
- 1...Rxa6!
- 1...Rxb2+
- 1.Sb4?
- Keys
- 1.Sc7!
- 1...Rxb2+
- 2.Qxb2#
- 1...h1Q
- 2.Qxh1#
- 1...h1S
- 2.Qxh1#
- 1...h1B
- 2.Qxh1#
- 1...h1R
- 2.Qxh1#
- 1...Ra7
- 2.b4#
- 1...Ra3
- 2.bxa3#
- 1...Ra4
- 2.b4#
- 1...Ra5
- 2.b4#
- 1...Ra6
- 2.b4#
- 1...Ra8
- 2.Qxa8#
- 1...Rxb2+
- 1.Sc7!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(b);CHECK,OGATE,P_SPINR(b),XP(A)::QAB1(F),XR(b)
- R(b);N_PINP(A)::QAB(F)+P(A),XR(b)
- R(b);N_PINP(A)::QAB(F)+P(A)
- R(b);N_PINP(A),XS(D)::QAB(F)+P(A)
- P(c);OGATE::QAB1(F),XQ(c)
- P(c);OGATE::QAB1(F),XS(c)
- P(c);OGATE::QAB1(F),XB(c)
- P(c);OGATE::QAB1(F),XR(c)
- Tries
- Try
- S(D);
- Vars
- R(b);CHECK,OGATE,P_SPINR(b),XP(A)::QAB1(F),XR(b)
- P(c);OGATE::QAB1(F),XQ(c)
- P(c);OGATE::QAB1(F),XS(c)
- P(c);OGATE::QAB1(F),XB(c)
- P(c);OGATE::QAB1(F),XR(c)
- R(b);N_PINP(A)::QAB(F)+P(A)
- R(b);N_PINP(A),OGATEB::QAB(F),XR(b)
- Refutation
- R(b);N_PINP(A)
- Try
- S(D);
- Threat
- S(D)
- Vars
- R(b);CHECK,OGATE,P_SPINR(b),XP(A)::QAB1(F),XR(b)
- R(b);N_PINP(A)::QAB(F)+P(A),XR(b)
- R(b);N_PINP(A)::QAB(F)+P(A)
- R(b);N_PINP(A),OGATEB::QAB(F),XR(b)
- Refutation
- R(b);N_PINP(A)
- Try
- S(D);
- Vars
- R(b);CHECK,OGATE,P_SPINR(b),XP(A)::QAB1(F),XR(b)
- P(c);OGATE::QAB1(F),XQ(c)
- P(c);OGATE::QAB1(F),XS(c)
- P(c);OGATE::QAB1(F),XB(c)
- P(c);OGATE::QAB1(F),XR(c)
- R(b);N_PINP(A)::QAB(F)+P(A),XR(b)
- R(b);N_PINP(A)::QAB(F)+P(A)
- Refutation
- R(b);N_PINP(A)
- Try
- B(C);
- Vars
- R(b);CHECK,OGATE,P_SPINR(b),XP(A)::QAB1(F),XR(b)
- R(b);N_PINP(A),XS(D)::QAB(F)+P(A)
- P(c);OGATE::QAB1(F),XQ(c)
- P(c);OGATE::QAB1(F),XS(c)
- P(c);OGATE::QAB1(F),XB(c)
- P(c);OGATE::QAB1(F),XR(c)
- R(b);N_PINP(A)::QAB(F)+P(A),XR(b)
- R(b);N_PINP(A)::QAB(F)+P(A)
- Refutation
- R(b);N_PINP(A)
- Try
- B(C);
- Vars
- R(b);CHECK,OGATE,P_SPINR(b),XP(A)::QAB1(F),XR(b)
- R(b);N_PINP(A),XS(D)::QAB(F)+P(A)
- P(c);OGATE::QAB1(F),XQ(c)
- P(c);OGATE::QAB1(F),XS(c)
- P(c);OGATE::QAB1(F),XB(c)
- P(c);OGATE::QAB1(F),XR(c)
- R(b);N_PINP(A)::QAB(F)+P(A),XR(b)
- R(b);N_PINP(A)::QAB(F)+P(A)
- Refutation
- R(b);N_PINP(A)
- Try
- B(C);
- Vars
- R(b);CHECK,OGATE,P_SPINR(b),XP(A)::QAB1(F),XR(b)
- R(b);N_PINP(A),XS(D)::QAB(F)+P(A)
- P(c);OGATE::QAB1(F),XQ(c)
- P(c);OGATE::QAB1(F),XS(c)
- P(c);OGATE::QAB1(F),XB(c)
- P(c);OGATE::QAB1(F),XR(c)
- R(b);N_PINP(A)::QAB(F)+P(A),XR(b)
- R(b);N_PINP(A)::QAB(F)+P(A)
- Refutation
- R(b);N_PINP(A)
- Try
- B(C);
- Vars
- R(b);CHECK,OGATE,P_SPINR(b),XP(A)::QAB1(F),XR(b)
- R(b);N_PINP(A),XS(D)::QAB(F)+P(A)
- P(c);OGATE::QAB1(F),XQ(c)
- P(c);OGATE::QAB1(F),XS(c)
- P(c);OGATE::QAB1(F),XB(c)
- P(c);OGATE::QAB1(F),XR(c)
- R(b);N_PINP(A)::QAB(F)+P(A),XR(b)
- R(b);N_PINP(A)::QAB(F)+P(A)
- Refutation
- R(b);N_PINP(A)
- Try
- Q(F);
- Threat
- QAR(F)
- Vars
- P(c);OGATE::QAB1(F),XQ(c)
- P(c);OGATE::QAB1(F),XR(c)
- Refutation
- R(b);CHECK,XP(A)
- Try
- Q(F);
- Threat
- QAR(F)
- Vars
- P(c);OGATE::QAB1(F),XQ(c)
- P(c);OGATE::QAB1(F),XR(c)
- Refutation
- R(b);CHECK,XP(A)
- Try
- Q(F);
- Threat
- QAR(F)
- Vars
- P(c);OGATE::QAB1(F),XQ(c)
- P(c);OGATE::QAB1(F),XR(c)
- Refutation
- R(b);CHECK,XP(A)
- Try
- Q(F);
- Threat
- QAR2(F)
- Vars
- P(c);OGATE::QAB1(F),XQ(c)
- P(c);OGATE::QAB1(F),XR(c)
- Refutation
- R(b);CHECK,XP(A)
- Try
- P(E);
- Vars
- R(b);CHECK,OGATE,P_SPINR(b),XP(A)::QAB1(F),XR(b)
- P(c);OGATE::QAB1(F),XQ(c)
- P(c);OGATE::QAB1(F),XS(c)
- P(c);OGATE::QAB1(F),XB(c)
- P(c);OGATE::QAB1(F),XR(c)
- R(b);N_PINP(A)::QAB(F)+P(A),XR(b)
- R(b);N_PINP(A)::QAB(F)+P(A)
- Refutation
- R(b);N_PINP(A),XS(D)
- Try
- Actual
- S(D);
- Vars
- R(b);CHECK,OGATE,P_SPINR(b),XP(A)::QAB1(F),XR(b)
- P(c);OGATE::QAB1(F),XQ(c)
- P(c);OGATE::QAB1(F),XS(c)
- P(c);OGATE::QAB1(F),XB(c)
- P(c);OGATE::QAB1(F),XR(c)
- R(b);N_PINP(A)::QAB(F)+P(A)
- R(b);N_PINP(A)::QAB(F)+P(A),XR(b)
- R(b);N_PINP(A),OGATEB::QAB(F),XR(b)
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).