MESON Chess Problem Database
Problem Display
PID: 60144 (3bq1B1/1n1p1R2/1r1pk3/1r1N3K/2PP3n/6p1/Q2pNRp1/3b4 w - - 0 1)
Gavrilov, Constantin Grigorievich
Highly Comm., Brisbane Courier, 1928
#2
9 + 13
SOLUTION
- SOUND
- Sets
- 1...Qxf7+
- 2.Bxf7#
- 1...Qe7
- 2.R7f6#
- 2.Rxe7#
- 1...Qf8
- 2.R7f6#
- 2.Re7#
- 2.Rxf8#
- 1...Rb1
- 2.Sf4#
- 1...Rb2
- 2.Sf4#
- 1...Rb3
- 2.Sf4#
- 1...Rb4
- 2.Sf4#
- 1...Rxd5+
- 2.cxd5#
- 1...Bc2
- 2.Sf4#
- 1...Bxe2+
- 2.Rxe2#
- 1...Bb3
- 2.Sf4#
- 1...Ba4
- 2.Sf4#
- 1...Bg5
- 2.Sc7#
- 1...Bf6
- 2.Rxf6#
- 1...Bc7
- 2.Rf6#
- 1...Sf3
- 2.Sf4#
- 1...Sf5
- 2.Sf4#
- 1...Sg6
- 2.R7f6#
- 2.Re7#
- 1...Sc5
- 2.Sf4#
- 1...Qxf7+
- Tries
- 1.Kg4?
- threat
- 2.Sf4#
- 2.R7f6#
- 2.Re7#
- 1...Bxe2+
- 2.Rxe2#
- 1...Qxf7
- 2.Bxf7#
- 1...Rxd5
- 2.cxd5#
- 1...Qe7
- 2.Sf4#
- 2.R7f6#
- 2.Rxe7#
- 1...Bg5
- 2.Sc7#
- 2.R7f6#
- 2.Re7#
- 1...Bf6
- 2.Sf4#
- 2.Sc7#
- 2.R2xf6#
- 2.R7xf6#
- 2.Re7#
- 1...Be7
- 2.Sf4#
- 2.Sc7#
- 2.R7f6#
- 2.Rxe7#
- 1...Sg6
- 2.R7f6#
- 2.Re7#
- 1...Qxg8+!
- threat
- 1.Qb1?
- threat
- 2.Qe4#
- 1...Qxf7+
- 2.Bxf7#
- 1...Bxe2+
- 2.Rxe2#
- 1...Rxb1
- 2.Sf4#
- 1...Bc2
- 2.Sf4#
- 1...Bf6
- 2.Rxf6#
- 1...Sf3
- 2.Sf4#
- 2.Qf5#
- 1...Sg6
- 2.R7f6#
- 2.Re7#
- 2.Qf5#
- 1...Sc5
- 2.Sf4#
- 1...Rxd5+!
- threat
- 1.Qc2?
- threat
- 2.Qe4#
- 1...Qxf7+
- 2.Bxf7#
- 1...Bxe2+
- 2.Rxe2#
- 1...Bxc2
- 2.Sf4#
- 1...Bf6
- 2.Rxf6#
- 1...Sf3
- 2.Sf4#
- 2.Qf5#
- 1...Sg6
- 2.R7f6#
- 2.Re7#
- 2.Qf5#
- 1...Sc5
- 2.Sf4#
- 1...Rxd5+!
- threat
- 1.Qxd2?
- threat
- 2.Qe3#
- 1...Qxf7+
- 2.Bxf7#
- 1...Bxe2+
- 2.Rxe2#
- 2.Qxe2#
- 1...Rb3
- 2.Sf4#
- 1...Bc2
- 2.Sf4#
- 1...Bg5
- 2.Sc7#
- 1...Bf6
- 2.Rxf6#
- 1...Sf3
- 2.Sf4#
- 1...Sf5
- 2.Sf4#
- 1...Sg6
- 2.R7f6#
- 2.Re7#
- 1...Sc5
- 2.Sf4#
- 1...Rxd5+!
- threat
- 1.Qa3?
- threat
- 2.Qe3#
- 1...Qxf7+
- 2.Bxf7#
- 1...Bxe2+
- 2.Rxe2#
- 1...Rb3
- 2.Sf4#
- 1...Bc2
- 2.Sf4#
- 1...Bb3
- 2.Sf4#
- 1...Bg5
- 2.Sc7#
- 1...Bf6
- 2.Rxf6#
- 1...Sf3
- 2.Sf4#
- 1...Sf5
- 2.Sf4#
- 1...Sg6
- 2.R7f6#
- 2.Re7#
- 1...Sc5
- 2.Sf4#
- 1...Rxd5+!
- threat
- 1.cxb5?
- threat
- 2.Sf4#
- 2.Sc7#
- 1...Qxf7+
- 2.Bxf7#
- 1...Bxe2+
- 2.Rxe2#
- 1...Bb3
- 2.Sef4#
- 2.Sdf4#
- 1...Bf6
- 2.Sc7#
- 2.Rxf6#
- 1...Bc7
- 2.Sf4#
- 2.Sxc7#
- 2.Rf6#
- 1...Rxb5!
- threat
- 1.Kg4?
- Keys
- 1.Qb3!
- threat
- 2.Qe3#
- 1...Qxf7+
- 2.Bxf7#
- 1...Rxd5+
- 2.cxd5#
- 1...Bxe2+
- 2.Rxe2#
- 1...Rxb3
- 2.Sf4#
- 1...Bxb3
- 2.Sf4#
- 1...Bc2
- 2.Sf4#
- 1...Bg5
- 2.Sc7#
- 1...Bf6
- 2.Rxf6#
- 1...Sf3
- 2.Sf4#
- 1...Sf5
- 2.Sf4#
- 1...Sg6
- 2.R7f6#
- 2.Re7#
- 1...Sc5
- 2.Sf4#
- threat
- 1.Qb3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 5
- Sets
- Q(m);CHECK,OGATE,P_SPINQ(m),XR(H)::B(I),XQ(m)
- R(f);::S(F)
- R(f);CHECK,OGATE,XS(F)::P(D),XR(f)
- B(a);N_PINS(B),P_PINS(F)::S(B)
- B(a);CHECK,OGATE,P_PINS(F),XS(B)::R(C),XB(a)
- B(l);::S(F)
- B(l);N_GUARD::R1(C),XB(l)
- B(l);N_GUARD::R1(C)
- S(e);N_PINS(B),P_PINS(F)::S(B)
- S(e);::S(F)
- S(j);::S(F)
- Tries
- Try
- K(G);N_SPINR(H),S_FLIGHT
- Threat
- DUALS(3)
- Vars
- B(a);CHECK,OGATE,XS(B)::R(C),XB(a)
- Q(m);OGATE,P_SPINQ(m),XR(H)::B(I),XQ(m)
- R(f);OGATE,XS(F)::P(D),XR(f)
- Refutation
- Q(m);CHECK,XB(I)
- Try
- Q(A);
- Threat
- QAR2(A)
- Vars
- Q(m);CHECK,OGATE,P_SPINQ(m),XR(H)::B(I),XQ(m)
- B(a);CHECK,OGATE,P_PINS(F),XS(B)::R(C),XB(a)
- R(f);XQ(A)::S(F)
- B(a);N_PINS(B),P_PINS(F)::S(B)
- B(l);N_GUARD::R1(C),XB(l)
- S(j);::S(F)
- Refutation
- R(f);CHECK,XS(F)
- Try
- Q(A);
- Threat
- QAR2(A)
- Vars
- Q(m);CHECK,OGATE,P_SPINQ(m),XR(H)::B(I),XQ(m)
- B(a);CHECK,OGATE,P_PINS(F),XS(B)::R(C),XB(a)
- B(a);N_PINS(B),P_PINS(F),XQ(A)::S(B)
- B(l);N_GUARD::R1(C),XB(l)
- S(j);::S(F)
- Refutation
- R(f);CHECK,XS(F)
- Try
- Q(A);XP(b)
- Threat
- QAR(A)
- Vars
- Q(m);CHECK,OGATE,P_SPINQ(m),XR(H)::B(I),XQ(m)
- R(f);::S(F)
- B(a);N_PINS(B),P_PINS(F)::S(B)
- B(l);::S(F)
- B(l);N_GUARD::R1(C),XB(l)
- S(e);N_PINS(B),P_PINS(F)::S(B)
- S(e);::S(F)
- S(j);::S(F)
- Refutation
- R(f);CHECK,XS(F)
- Try
- Q(A);
- Threat
- QAR(A)
- Vars
- Q(m);CHECK,OGATE,P_SPINQ(m),XR(H)::B(I),XQ(m)
- B(a);CHECK,OGATE,P_PINS(F),XS(B)::R(C),XB(a)
- R(f);::S(F)
- B(a);N_PINS(B),P_PINS(F)::S(B)
- B(l);::S(F)
- B(l);N_GUARD::R1(C),XB(l)
- S(e);N_PINS(B),P_PINS(F)::S(B)
- S(e);::S(F)
- S(j);::S(F)
- Refutation
- R(f);CHECK,XS(F)
- Try
- P(D);XR(f)
- Threat
- DUALS(2)
- Vars
- Q(m);CHECK,OGATE,P_SPINQ(m),XR(H)::B(I),XQ(m)
- B(a);CHECK,OGATE,XS(B)::R(C),XB(a)
- Refutation
- R(g);XP(D)
- Try
- Actual
- Q(A);
- Threat
- QAR(A)
- Vars
- Q(m);CHECK,OGATE,P_SPINQ(m),XR(H)::B(I),XQ(m)
- R(f);CHECK,OGATE,XS(F)::P(D),XR(f)
- B(a);CHECK,OGATE,P_PINS(F),XS(B)::R(C),XB(a)
- R(f);XQ(A)::S(F)
- B(a);N_PINS(B),P_PINS(F),XQ(A)::S(B)
- B(a);N_PINS(B),P_PINS(F)::S(B)
- B(l);::S(F)
- B(l);N_GUARD::R1(C),XB(l)
- S(e);N_PINS(B),P_PINS(F)::S(B)
- S(e);::S(F)
- S(j);::S(F)
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).