MESON Chess Problem Database
Problem Display
PID: 71706 (2K5/1B1p4/p2B4/1NRRP2p/r1pNkpP1/q2npn2/2r1P3/1Q1b4 w - - 0 1)
Gavrilov, Constantin Grigorievich
Revista Romana de Sah, 1935
#2
11 + 13
SOLUTION
- SOUND
- Sets
- 1...Qxc5+
- 2.Rxc5#
- 1...Sxc5
- 2.Rxc5#
- 1...Sdxe5
- 2.Rxe5#
- 1...Sxd4
- 2.Rxd4#
- 1...Sfxe5
- 2.Rxe5#
- 1...Qxc5+
- Tries
- 1.Sxc2?
- threat
- 2.Rxd3#
- 2.Rd4#
- 1...Qxc5+
- 2.Rxc5#
- 1...Bxe2
- 2.Rd4#
- 1...Sxc5
- 2.Rd4#
- 2.Rxc5#
- 1...Sdxe5
- 2.Rd4#
- 2.Rxe5#
- 1...Sfxe5
- 2.Rd4#
- 2.Rxe5#
- 1...Sc1
- 2.Rxd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 1...Sde1
- 2.Rxd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 1...Sb2
- 2.Rxd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 1...Sf2
- 2.Rxd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 1...Sb4
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...hxg4!
- threat
- 1.Sb3?
- threat
- 2.Rxd3#
- 2.Rd4#
- 1...Qxc5+
- 2.Rxc5#
- 1...Bxe2
- 2.Rd4#
- 1...Sxc5
- 2.Sc3#
- 2.Rd4#
- 2.Rxc5#
- 1...Sdxe5
- 2.Sc3#
- 2.Rd4#
- 2.Rxe5#
- 1...Sfxe5
- 2.Rd4#
- 2.Rxe5#
- 1...Sc1
- 2.Sc3#
- 2.Rxd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 1...Sde1
- 2.Sc3#
- 2.Rxd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 1...Sb2
- 2.Sc3#
- 2.Rxd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 1...Sf2
- 2.Sc3#
- 2.Rxd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 1...Sb4
- 2.Sc3#
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...hxg4!
- threat
- 1.Sxf3?
- threat
- 2.Sg5#
- 2.Rxd3#
- 2.Rd4#
- 1...Qxc5+
- 2.Rxc5#
- 1...Bxe2
- 2.Sg5#
- 2.Rd4#
- 1...Sxc5
- 2.Sg5#
- 2.Rd4#
- 2.Rxc5#
- 1...Sxe5
- 2.Sg5#
- 2.Rd4#
- 2.Rxe5#
- 1...Sc1
- 2.Sg5#
- 2.Rxd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 1...Se1
- 2.Sg5#
- 2.Rxd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 1...Sb2
- 2.Sg5#
- 2.Rxd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 1...Sf2
- 2.Sg5#
- 2.Rxd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 1...Sb4
- 2.Sg5#
- 2.Rxc4#
- 2.Rd4#
- 1...hxg4!
- threat
- 1.Sf5?
- threat
- 2.Rxd3#
- 2.Rd4#
- 1...Qxc5+
- 2.Rxc5#
- 1...Bxe2
- 2.Rd4#
- 1...Sxc5
- 2.Rd4#
- 2.Rxc5#
- 1...Sdxe5
- 2.Rd4#
- 2.Rxe5#
- 1...Sfxe5
- 2.Rd4#
- 2.Rxe5#
- 1...Sc1
- 2.Rxd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 1...Sde1
- 2.Rxd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 1...Sb2
- 2.Rxd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 1...Sf2
- 2.Rxd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 1...Sb4
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...hxg4!
- threat
- 1.Se6?
- threat
- 2.Rxd3#
- 2.Rd4#
- 1...Qxc5+
- 2.Rxc5#
- 1...Bxe2
- 2.Rd4#
- 1...Sxc5
- 2.Rd4#
- 2.Rxc5#
- 1...Sdxe5
- 2.Rd4#
- 2.Rxe5#
- 1...Sfxe5
- 2.Sg5#
- 2.Rd4#
- 2.Rxe5#
- 1...Sc1
- 2.Rxd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 1...Sde1
- 2.Rxd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 1...Sb2
- 2.Rxd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 1...Sf2
- 2.Rxd1#
- 2.Rd2#
- 2.Rd3#
- 2.Rd4#
- 1...Sb4
- 2.Rd4#
- 1...Sd4
- 2.Sg5#
- 2.Rxd4#
- 1...hxg4!
- threat
- 1.Bc7?
- threat
- 2.Sd6#
- 2.Rd6#
- 2.Rxd7#
- 1...Sxc5
- 2.Sd6#
- 1...Sdxe5
- 2.Sd6#
- 2.Rxe5#
- 1...Sxd4
- 2.Sd6#
- 2.Rxd4#
- 1...Sfxe5
- 2.Sd6#
- 2.Rxe5#
- 1...axb5
- 2.Rd6#
- 2.Rxd7#
- 1...Sb4
- 2.Sd6#
- 1...d6
- 2.Sxd6#
- 2.Rxd6#
- 1...Qxc5!
- threat
- 1.Be7?
- threat
- 2.Sd6#
- 2.Rd6#
- 2.Rxd7#
- 1...Sxc5
- 2.Sd6#
- 1...Sdxe5
- 2.Sd6#
- 2.Rxe5#
- 1...Sxd4
- 2.Sd6#
- 2.Rxd4#
- 1...Sfxe5
- 2.Sd6#
- 2.Rxe5#
- 1...axb5
- 2.Rd6#
- 2.Rxd7#
- 1...Sb4
- 2.Sd6#
- 1...d6
- 2.Sxd6#
- 2.Rxd6#
- 1...Qxc5+!
- threat
- 1.Bb8?
- threat
- 2.Sd6#
- 2.Rd6#
- 2.Rxd7#
- 1...Sxc5
- 2.Sd6#
- 1...Sdxe5
- 2.Sd6#
- 2.Rxe5#
- 1...Sxd4
- 2.Sd6#
- 2.Rxd4#
- 1...Sfxe5
- 2.Sd6#
- 2.Rxe5#
- 1...axb5
- 2.Rd6#
- 2.Rxd7#
- 1...Sb4
- 2.Sd6#
- 1...d6
- 2.Sxd6#
- 2.Rxd6#
- 1...Qxc5+!
- threat
- 1.Bf8?
- threat
- 2.Sd6#
- 2.Rd6#
- 2.Rxd7#
- 1...Sxc5
- 2.Sd6#
- 1...Sdxe5
- 2.Sd6#
- 2.Rxe5#
- 1...Sxd4
- 2.Sd6#
- 2.Rxd4#
- 1...Sfxe5
- 2.Sd6#
- 2.Rxe5#
- 1...axb5
- 2.Rd6#
- 2.Rxd7#
- 1...Sb4
- 2.Sd6#
- 1...d6
- 2.Sxd6#
- 2.Rxd6#
- 1...Qxc5+!
- threat
- 1.e6?
- threat
- 2.Re5#
- 2.Rf5#
- 2.Rg5#
- 2.Rxh5#
- 1...Qxc5+
- 2.Rxc5#
- 1...Sxc5
- 2.Rxc5#
- 2.Re5#
- 1...Sxd4
- 2.Rxd4#
- 2.Re5#
- 1...hxg4
- 2.Re5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 1...Sb4
- 2.Re5#
- 1...Sde5
- 2.Rxe5#
- 1...Sfe5
- 2.Rxe5#
- 1...Sg5
- 2.Re5#
- 2.Rf5#
- 2.Rxg5#
- 1...h4
- 2.Re5#
- 2.Rf5#
- 2.Rg5#
- 2.Rh5#
- 1...axb5!
- threat
- 1.Sxc2?
- Keys
- 1.Rxc4!
- threat
- 2.Rdc5#
- 1...Qc5+
- 2.Rdxc5#
- 1...Qxd6
- 2.Sxd6#
- 1...Sdxe5
- 2.Rxe5#
- 1...Sfxe5
- 2.Rxe5#
- 1...Sb4
- 2.Sxf3#
- 1...Sc5
- 2.Rdxc5#
- threat
- 1.Rxc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- Q(c);CHECK,OGATE,XR(F)::B(J)+R(G),XQ(c)
- S(d);OGATE,P_SPINR(b),XR(F)::B(J)+R(G),XS(d)
- S(d);OGATE,P_SPINR(b),XP(H)::B(J)+R(G),DCHECK,XS(d)
- S(f);OGATE,XS(C)::B(J)+R(G),DCHECK,XS(f)
- S(f);OGATE,XP(H)::B(J)+R(G),DCHECK,XS(f)
- Tries
- Try
- S(C);XR(b)
- Threat
- DUALS(2)
- Vars
- Q(c);CHECK,OGATE,XR(F)::B(J)+R(G),XQ(c)
- B(a);XP(B)::B(J)+R(G),DCHECK
- S(d);::B(J)+R(G),DCHECK
- S(f);::B(J)+R(G),DCHECK,XS(f)
- Refutation
- P(k);XP(D)
- Try
- S(C);
- Threat
- DUALS(2)
- Vars
- Q(c);CHECK,OGATE,XR(F)::B(J)+R(G),XQ(c)
- B(a);XP(B)::B(J)+R(G),DCHECK
- S(f);::B(J)+R(G),DCHECK,XS(f)
- Refutation
- P(k);XP(D)
- Try
- S(C);XS(f)
- Threat
- DUALS(3)
- Vars
- Q(c);CHECK,OGATE,XR(F)::B(J)+R(G),XQ(c)
- Refutation
- P(k);XP(D)
- Try
- S(C);
- Threat
- DUALS(2)
- Vars
- Q(c);CHECK,OGATE,XR(F)::B(J)+R(G),XQ(c)
- B(a);XP(B)::B(J)+R(G),DCHECK
- S(d);P_SPINR(b)::B(J)+R(G),DCHECK
- S(f);::B(J)+R(G),DCHECK,XS(f)
- Refutation
- P(k);XP(D)
- Try
- S(C);
- Threat
- DUALS(2)
- Vars
- Q(c);CHECK,OGATE,XR(F)::B(J)+R(G),XQ(c)
- B(a);XP(B)::B(J)+R(G),DCHECK
- S(d);P_SPINR(b)::B(J)+R(G),DCHECK
- Refutation
- P(k);XP(D)
- Try
- B(I);
- Threat
- DUALS(3)
- Vars
- S(d);P_SPINR(b),XR(F)::S(E)
- S(d);P_SPINR(b)::S(E)
- Refutation
- Q(c);P_PINB(I),XR(F)
- Try
- B(I);
- Threat
- DUALS(3)
- Vars
- S(d);P_SPINR(b),XR(F)::S(E)
- S(d);P_SPINR(b)::S(E)
- Refutation
- Q(c);CHECK,XR(F)
- Try
- B(I);
- Threat
- DUALS(3)
- Vars
- S(d);P_SPINR(b),XR(F)::S(E)
- S(d);P_SPINR(b)::S(E)
- Refutation
- Q(c);CHECK,XR(F)
- Try
- B(I);
- Threat
- DUALS(3)
- Vars
- S(d);P_SPINR(b),XR(F)::S(E)
- S(d);P_SPINR(b)::S(E)
- Refutation
- Q(c);CHECK,XR(F)
- Try
- P(H);
- Threat
- DUALS(4)
- Vars
- Q(c);CHECK,OGATE,XR(F)::B(J)+R(G),XQ(c)
- S(d);P_SPINR(b)::B(J)+R(G),DCHECK
- S(d);P_SPINR(b)::B(J)+R(G),DCHECK,XS(d)
- S(f);::B(J)+R(G),DCHECK,XS(f)
- Refutation
- P(l);XS(E)
- Try
- Actual
- R(F);P_SPINR(F),XP(h)
- Threat
- B(J)+R(G)
- Vars
- Q(c);CHECK,N_PINR(F)::B(J)+R(G),XQ(c)
- Q(c);XB(I)::S(E),XQ(c)
- S(d);OGATE,P_SPINR(b),XP(H)::B(J)+R(G),DCHECK,XS(d)
- S(f);OGATE,XP(H)::B(J)+R(G),DCHECK,XS(f)
- S(d);P_SPINR(b),S_CUTR(g)::R(F)+S(C),XS(f)
- S(d);N_PINR(F),P_SPINR(b)::B(J)+R(G),XS(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).