MESON Chess Problem Database
Problem Display
PID: 53897 (1Q5B/2pK2Rr/4p2N/3Nk2p/4p3/p3P3/b7/8 w - - 0 1)
Dobbs, Gilbert S
The Chess Review, 1935
#2
7 + 8
SOLUTION
- SOUND
- Sets
- 1...Rxh6
- 2.Rg5#
- 1...Rxh8
- 2.Rg5#
- 1...Bxd5
- 2.Rxh7#
- 1...exd5
- 2.Re7#
- 2.Rxh7#
- 1...Rxh6
- Tries
- 1.Kc6?
- threat
- 2.Rg5#
- 2.Rxh7#
- 2.Qxc7#
- 1...Rxh6
- 2.Rg5#
- 1...Rxg7
- 2.Bxg7#
- 2.Qxc7#
- 1...Rxh8
- 2.Rg5#
- 2.Qxc7#
- 1...exd5
- 2.Re7#
- 1...Bxd5+!
- threat
- 1.Sxc7?
- threat
- 2.Rxh7#
- 1...Rxg7+
- 2.Bxg7#
- 1...Kf6
- 2.Se8#
- 1...Rxh6
- 2.Rg5#
- 1...Rxh8!
- threat
- 1.Se7?
- threat
- 2.Rg5#
- 2.Rxh7#
- 1...Kf6
- 2.Rg6#
- 1...Rxh6
- 2.Rg5#
- 1...Rxg7
- 2.Bxg7#
- 1...Rxh8!
- threat
- 1.Sf7+?
- 1...Kf5
- 2.Rg5#
- 1...Kxd5!
- 1...Kf5
- 1.Qb2+?
- 1...Kxd5
- 2.Qd4#
- 1...axb2!
- 1...Kxd5
- 1.Qb3?
- threat
- 2.Rxh7#
- 1...Rxg7+
- 2.Bxg7#
- 1...Rxh6
- 2.Rg5#
- 1...Rxh8
- 2.Rg5#
- 1...Bxb3!
- threat
- 1.Qb5?
- threat
- 2.Rxh7#
- 1...Rxg7+
- 2.Bxg7#
- 1...Rxh6
- 2.Rg5#
- 1...Rxh8
- 2.Rg5#
- 1...c5!
- threat
- 1.Qb7?
- threat
- 2.Rxh7#
- 1...Rxg7+
- 2.Bxg7#
- 1...Rxh6
- 2.Rg5#
- 1...Rxh8
- 2.Rg5#
- 1...c6!
- threat
- 1.Qa8?
- threat
- 2.Rxh7#
- 1...Rxg7+
- 2.Bxg7#
- 1...Rxh6
- 2.Rg5#
- 1...Rxh8
- 2.Rg5#
- 1...c6!
- threat
- 1.Kc6?
- Keys
- 1.Kxc7!
- threat
- 2.Kc6#
- 1...Kxd5
- 2.Qb5#
- 1...Rxh6
- 2.Rg5#
- 1...Rxh8
- 2.Rg5#
- 1...Bxd5
- 2.Rxh7#
- 1...exd5
- 2.Re7#
- threat
- 1.Kxc7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(h);N_PINR(E),XS(C)::B(G)+R(E),DCHECK
- R(h);N_PINR(E),XB(G)::R(E)
- B(a);SBLOCK,XS(B)::B(G)+R(E),XR(h)
- Tries
- Try
- K(D);N_SPINR(E),S_FLIGHT
- Threat
- DUALS(3)
- Vars
- R(h);XS(C)::B(G)+R(E),DCHECK
- P(f);XS(B)::B(G)+R(E),DCHECK
- Refutation
- B(a);CHECK,XS(B)
- Try
- S(B);XP(g)
- Threat
- B(G)+R(E),XR(h)
- Vars
- R(h);CHECK,OGATE,P_SPINR(h),XR(E)::B(G),XR(h)
- K(d);S_FLIGHT::S(B)
- R(h);N_PINR(E),XS(C)::B(G)+R(E),DCHECK
- Refutation
- R(h);N_PINR(E),XB(G)
- Try
- S(B);N_SPINR(E)
- Threat
- DUALS(2)
- Vars
- K(d);N_SPINP(g),S_FLIGHT::B(G)+R(E),DCHECK
- R(h);XS(C)::B(G)+R(E),DCHECK
- R(h);OGATE,P_PINS(B),P_SPINR(h),XR(E)::B(G),XR(h)
- Refutation
- R(h);XB(G)
- Try
- S(C);CHECK,N_SPINR(E)
- Vars
- K(d);N_SPINP(g),P-FLIGHT::R1(E)
- Refutation
- K(d);N_SPINP(g),P-FLIGHT,XS(B)
- Try
- Q(F);CHECK,N_PINP(g)
- Vars
- K(d);P-FLIGHT,XS(B)::QAR1(F)
- Refutation
- P(b);XQ(F)
- Try
- Q(F);N_PINP(g)
- Threat
- B(G)+R(E),XR(h)
- Vars
- R(h);CHECK,OGATE,P_SPINR(h),XR(E)::B(G),XR(h)
- R(h);N_PINR(E),XS(C)::B(G)+R(E),DCHECK
- R(h);N_PINR(E),XB(G)::R(E)
- Refutation
- B(a);XQ(F)
- Try
- Q(F);N_PINP(g)
- Threat
- B(G)+R(E),XR(h)
- Vars
- R(h);CHECK,OGATE,P_SPINR(h),XR(E)::B(G),XR(h)
- R(h);N_PINR(E),XS(C)::B(G)+R(E),DCHECK
- R(h);N_PINR(E),XB(G)::R(E)
- Refutation
- P(g);
- Try
- Q(F);N_PINP(g)
- Threat
- B(G)+R(E),XR(h)
- Vars
- R(h);CHECK,OGATE,P_SPINR(h),XR(E)::B(G),XR(h)
- R(h);N_PINR(E),XS(C)::B(G)+R(E),DCHECK
- R(h);N_PINR(E),XB(G)::R(E)
- Refutation
- P(g);
- Try
- Q(F);N_PINP(g)
- Threat
- B(G)+R(E),XR(h)
- Vars
- R(h);CHECK,OGATE,P_SPINR(h),XR(E)::B(G),XR(h)
- R(h);N_PINR(E),XS(C)::B(G)+R(E),DCHECK
- R(h);N_PINR(E),XB(G)::R(E)
- Refutation
- P(g);
- Try
- Actual
- K(D);P-FLIGHT,XP(g)
- Threat
- QAB(F)+K(D)
- Vars
- K(d);OGATEB,P-FLIGHT,XS(B)::QAR2(F)
- R(h);N_PINR(E),XS(C)::B(G)+R(E),DCHECK
- R(h);N_PINR(E),XB(G)::R(E)
- B(a);SBLOCK,XS(B)::B(G)+R(E),XR(h)
- P(f);SBLOCK,XS(B)::B(G)+R(E),DCHECK
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).