MESON Chess Problem Database
Problem Display
PID: 241309 (1BN5/1PR1p1Kp/4r1bR/1p1rk1N1/1p2p1P1/pP2P3/Qb6/8 w - - 0 1)
Gavrilov, Constantin Grigorievich
Revista Romana de Sah, 1926
#2
11 + 11
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rd1
- 2.Rc5#
- 1...Rd2
- 2.Rc5#
- 1...Rd3
- 2.Rc5#
- 1...Rd4
- 2.Rc5#
- 1...Rc5
- 2.Rxc5#
- 1...Rdd6
- 2.Rc5#
- 1...Rd7
- 2.Rc5#
- 1...Rd8
- 2.Rc5#
- 1...Ra6
- 2.Rxe7#
- 1...Rb6
- 2.Rxe7#
- 1...Rc6
- 2.Rxe7#
- 1...Red6
- 2.Rxe7#
- 1...Rf6
- 2.Rxe7#
- 1...Ba1
- 2.Qh2#
- 1...Bc1
- 2.Qh2#
- 1...Bc3
- 2.Qh2#
- 1...Bd4
- 2.Qh2#
- 1...Bf5
- 2.Sf7#
- 1...Bh5
- 2.Rxe6#
- 1...Bf7
- 2.Sxf7#
- 1...Be8
- 2.Rxe6#
- 1...Rd1
- Tries
- 1.Sa7?
- 1...Rd1
- 2.Rc5#
- 1...Rd2
- 2.Rc5#
- 1...Rd3
- 2.Rc5#
- 1...Rd4
- 2.Rc5#
- 1...Rc5
- 2.Rxc5#
- 1...Rd7
- 2.Rc5#
- 1...Rd8
- 2.Rc5#
- 1...Bf5
- 2.Sf7#
- 1...Rdd6
- 2.Rc5#
- 1...Ra6
- 2.Rxe7#
- 1...Rb6
- 2.Rxe7#
- 1...Rc6
- 2.Rxe7#
- 1...Red6
- 2.Rxe7#
- 1...Rf6
- 2.Rxe7#
- 1...Ba1
- 2.Qh2#
- 1...Bc1
- 2.Qh2#
- 1...Bc3
- 2.Qh2#
- 1...Bd4
- 2.Qh2#
- 1...Bh5
- 2.Rxe6#
- 1...Bf7
- 2.Sxf7#
- 1...Be8
- 2.Rxe6#
- 1...Kd6+!
- 1...Rd1
- 1.Rh5?
- threat
- 2.Sf3#
- 2.Sf7#
- 1...Ra6
- 2.Rxe7#
- 1...Rb6
- 2.Rxe7#
- 1...Rc6
- 2.Rxe7#
- 1...Red6
- 2.Rxe7#
- 1...Rf6
- 2.Rxe7#
- 1...Bf5
- 2.Sf7#
- 1...Bf7
- 2.Sf3#
- 2.Sxf7#
- 1...Bxh5!
- threat
- 1.Rxg6?
- threat
- 2.Sf7#
- 2.Rxe6#
- 1...hxg6
- 2.Sf7#
- 1...Rd1
- 2.Rc5#
- 1...Rd2
- 2.Rc5#
- 1...Rd3
- 2.Rc5#
- 1...Rd4
- 2.Rc5#
- 1...Rc5
- 2.Rxc5#
- 1...Rdd6
- 2.Rc5#
- 1...Rd7
- 2.Rc5#
- 1...Rd8
- 2.Rc5#
- 1...Ra6
- 2.Sf7#
- 2.Rxe7#
- 1...Rb6
- 2.Sf7#
- 2.Rxe7#
- 1...Rc6
- 2.Sf7#
- 2.Rxe7#
- 1...Red6
- 2.Sf7#
- 2.Rxe7#
- 1...Rf6
- 2.Rxe7#
- 1...Rxg6+!
- threat
- 1.Rc1+?
- 1...Rdd6
- 2.Rc5#
- 1...Red6!
- 1...Rdd6
- 1.Rc2+?
- 1...Rdd6
- 2.Rc5#
- 1...Red6!
- 1...Rdd6
- 1.Rc3+?
- 1...Rdd6
- 2.Rc5#
- 1...Red6!
- 1...Rdd6
- 1.Rc4+?
- 1...Rdd6
- 2.Rc5#
- 1...Red6!
- 1...Rdd6
- 1.Rc6+?
- 1...Rdd6
- 2.Rc5#
- 1...Red6!
- 1...Rdd6
- 1.Rd7+?
- 1...Red6
- 2.Rxe7#
- 1...Rdd6!
- 1...Red6
- 1.Qxb2+?
- 1...Rd4
- 2.Rc5#
- 2.Qxd4#
- 1...axb2!
- 1...Rd4
- 1.Sa7?
- Keys
- 1.Sb6!
- 1...Kd6+
- 2.Rc3#
- 1...Rxb6
- 2.Rxe7#
- 1...Bf5
- 2.Sf7#
- 1...Rd1
- 2.Rc5#
- 1...Rd2
- 2.Rc5#
- 1...Rd3
- 2.Rc5#
- 1...Rd4
- 2.Rc5#
- 1...Rc5
- 2.Rxc5#
- 1...Rdd6
- 2.Rc5#
- 1...Rd7
- 2.Rc5#
- 1...Rd8
- 2.Rc5#
- 1...Rc6
- 2.Rxe7#
- 1...Red6
- 2.Rxe7#
- 1...Rf6
- 2.Rxe7#
- 1...Ba1
- 2.Qh2#
- 1...Bc1
- 2.Qh2#
- 1...Bc3
- 2.Qh2#
- 1...Bd4
- 2.Qh2#
- 1...Bh5
- 2.Rxe6#
- 1...Bf7
- 2.Sxf7#
- 1...Be8
- 2.Rxe6#
- 1...Kd6+
- 1.Sb6!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- R(f);::B(J)+R(H),DCHECK
- R(f);::B(J)+R(H),DCHECK,XR(f)
- R(f);S_CUTR(h)::R(H)
- R(h);::B(J)+R(H),DCHECK,XP(j)
- R(h);S_CUTR(f)::R(H),XP(j)
- B(a);OGATE::QAB(A)
- B(i);N_GUARD::S(E)
- B(i);OGATE::R1(F),XR(h)
- B(i);N_GUARD::S(E),XB(i)
- Tries
- Try
- S(K);
- Vars
- R(f);::B(J)+R(H),DCHECK
- R(f);::B(J)+R(H),DCHECK,XR(f)
- B(i);N_GUARD::S(E)
- R(f);S_CUTR(h)::R(H)
- R(h);::B(J)+R(H),DCHECK,XP(j)
- R(h);S_CUTR(f)::R(H),XP(j)
- B(a);OGATE::QAB(A)
- B(i);OGATE::R1(F),XR(h)
- B(i);N_GUARD::S(E),XB(i)
- Refutation
- K(g);CHECK,S_FLIGHT
- Try
- R(F);
- Threat
- DUALS(2)
- Vars
- R(h);::B(J)+R(H),DCHECK,XP(j)
- R(h);S_CUTR(f)::R(H),XP(j)
- B(i);::S(E)
- Refutation
- B(i);XR(F)
- Try
- R(F);XB(i)
- Threat
- DUALS(2)
- Vars
- P(k);XR(F)::S(E)
- R(f);::B(J)+R(H),DCHECK
- R(f);::B(J)+R(H),DCHECK,XR(f)
- R(f);S_CUTR(h)::R(H)
- R(h);::B(J)+R(H),DCHECK,XP(j)
- Refutation
- R(h);CHECK,XR(F)
- Try
- R(H);CHECK
- Vars
- R(f);P_SPINR(f),S_CUTR(h)::R(H)
- Refutation
- R(h);P_SPINR(h)
- Try
- R(H);CHECK
- Vars
- R(f);P_SPINR(f),S_CUTR(h)::R(H)
- Refutation
- R(h);P_SPINR(h)
- Try
- R(H);CHECK
- Vars
- R(f);P_SPINR(f),S_CUTR(h)::R(H)
- Refutation
- R(h);P_SPINR(h)
- Try
- R(H);CHECK
- Vars
- R(f);P_SPINR(f),S_CUTR(h)::R(H)
- Refutation
- R(h);P_SPINR(h)
- Try
- R(H);CHECK
- Vars
- R(f);P_SPINR(f),S_CUTR(h)::R(H)
- Refutation
- R(h);P_SPINR(h)
- Try
- R(H);CHECK
- Vars
- R(h);P_SPINR(h),S_CUTR(f)::R(H),XP(j)
- Refutation
- R(f);P_SPINR(f)
- Try
- Q(A);CHECK,XB(a)
- Refutation
- P(b);XQ(A)
- Try
- Actual
- S(K);
- Vars
- K(g);CHECK,S_FLIGHT::B(J)+R(H)
- R(h);XS(K)::B(J)+R(H),DCHECK,XP(j)
- B(i);N_GUARD::S(E)
- R(f);::B(J)+R(H),DCHECK
- R(f);::B(J)+R(H),DCHECK,XR(f)
- R(f);S_CUTR(h)::R(H)
- R(h);::B(J)+R(H),DCHECK,XP(j)
- R(h);S_CUTR(f)::R(H),XP(j)
- B(a);OGATE::QAB(A)
- B(i);OGATE::R1(F),XR(h)
- B(i);N_GUARD::S(E),XB(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).