MESON Chess Problem Database
Problem Display
PID: 242167 (n3R2r/K3B2r/2P2p1p/4kP1b/2PRp1P1/6p1/4Nb2/3Q1n1q w - - 0 1)
Gavrilov, Constantin Grigorievich
Brisbane Courier, 1928
#2
10 + 12
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rxe7+
- 2.Rxe7#
- 1...Be1
- 2.Rd5#
- 1...Bxd4+
- 2.Qxd4#
- 1...Bf7
- 2.Bd6#
- 1...Sc7
- 2.Bd6#
- 1...Rxe7+
- Tries
- 1.Ka6?
- threat
- 2.Bd6#
- 2.Rd5#
- 1...Rxe7
- 2.Rd5#
- 2.Rxe7#
- 1...Bxd4
- 2.Qxd4#
- 1...Bxg4
- 2.Rd5#
- 1...Bf7
- 2.Bd6#
- 1...Se3
- 2.Bd6#
- 1...Sb6
- 2.Bd6#
- 1...e3
- 2.Bd6#
- 1...Sc7+!
- threat
- 1.Kxa8?
- threat
- 2.Bd6#
- 2.Rd5#
- 1...Rxe7
- 2.Rd5#
- 1...Bxd4
- 2.Qxd4#
- 1...Bxg4
- 2.Rd5#
- 1...Bf7
- 2.Bd6#
- 1...Se3
- 2.Bd6#
- 1...e3
- 2.Bd6#
- 1...Rxe8+!
- threat
- 1.Kb8?
- threat
- 2.Bd6#
- 2.Rd5#
- 1...Rxe7
- 2.Rd5#
- 1...Bxd4
- 2.Qxd4#
- 1...Bxg4
- 2.Rd5#
- 1...Bf7
- 2.Bd6#
- 1...Se3
- 2.Bd6#
- 1...Sb6
- 2.Bd6#
- 1...Sc7
- 2.Bd6#
- 1...e3
- 2.Bd6#
- 1...Rxe8+!
- threat
- 1.c7?
- threat
- 2.Bd6#
- 1...Bxd4+
- 2.Qxd4#
- 1...Rxe7
- 2.Rxe7#
- 1...Bxg4!
- threat
- 1.Ka6?
- Keys
- 1.Qa1!
- threat
- 2.Qa5#
- 1...Rxe7+
- 2.Rxe7#
- 1...Bxd4+
- 2.Qxd4#
- 1...Se3
- 2.Rd1#
- 2.Rd5#
- 1...Be1
- 2.Rd2#
- 2.Rd5#
- 1...Bf7
- 2.Bd6#
- 1...Sb6
- 2.Rd5#
- 1...Sc7
- 2.Bd6#
- 1...e3
- 2.Rf4#
- threat
- 1.Qa1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- R(j);CHECK,OGATE,P_SPINR(j),XB(I)::R(J),XR(j)
- B(c);N_PINR(D)::R1(D)
- B(c);CHECK,OGATE,XR(D)::QAB1(A),XB(c)
- B(g);N_PINB(I)::R(J)+B(I),DCHECK
- S(k);N_PINB(I)::R(J)+B(I),DCHECK
- Tries
- Try
- K(H);N_SPINB(I),N_SPINR(D),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- B(c);OGATE,XR(D)::QAB1(A),XB(c)
- B(g);XP(E)::R1(D)
- B(g);::R(J)+B(I),DCHECK
- S(a);::R(J)+B(I),DCHECK
- S(k);::R(J)+B(I),DCHECK
- P(e);::R(J)+B(I),DCHECK
- Refutation
- S(k);CHECK
- Try
- K(H);N_SPINB(I),N_SPINR(D),P-FLIGHT,P_SPINR(J),XS(k)
- Threat
- DUALS(2)
- Vars
- R(j);P_SPINR(j),XB(I)::R1(D)
- B(c);OGATE,XR(D)::QAB1(A),XB(c)
- B(g);XP(E)::R1(D)
- B(g);::R(J)+B(I),DCHECK
- S(a);::R(J)+B(I),DCHECK
- P(e);P_PINP(G)::R(J)+B(I),DCHECK
- Refutation
- R(l);CHECK,XR(J)
- Try
- K(H);N_SPINB(I),N_SPINR(D),P_SPINR(J),S_FLIGHT
- Threat
- DUALS(2)
- Vars
- R(j);P_SPINR(j),XB(I)::R1(D)
- B(c);OGATE,XR(D)::QAB1(A),XB(c)
- B(g);XP(E)::R1(D)
- B(g);::R(J)+B(I),DCHECK
- S(a);::R(J)+B(I),DCHECK
- S(k);::R(J)+B(I),DCHECK
- P(e);::R(J)+B(I),DCHECK
- Refutation
- R(l);CHECK,XR(J)
- Try
- P(G);N_SPINB(I)
- Threat
- R(J)+B(I),DCHECK
- Vars
- B(c);CHECK,OGATE,XR(D)::QAB1(A),XB(c)
- R(j);OGATE,P_PINP(G),P_SPINR(j),XB(I)::R(J),XR(j)
- Refutation
- B(g);XP(E)
- Try
- Actual
- Q(A);
- Threat
- QAR(A)
- Vars
- R(j);CHECK,OGATE,P_SPINR(j),XB(I)::R(J),XR(j)
- B(c);CHECK,OGATE,P_SPINB(c),XR(D)::QAB1(A),XB(c)
- B(g);N_PINB(I)::R(J)+B(I),DCHECK
- S(k);N_PINR(D)::QAB(A)+R(D),DCHECK
- S(k);N_PINB(I)::R(J)+B(I),DCHECK
- P(e);N_PINR(D)::QAB(A)+R(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).