MESON Chess Problem Database
Problem Display
PID: 246460 (1B3R2/8/b7/3Q2K1/4N1p1/r6B/3R4/2b1k1N1 w - - 0 1)
Segers, Marcel
Europe Echecs, 1990
#2
8 + 5
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Bg3#
- 1...Ra2
- 2.Bg3#
- 1...Rd3
- 2.Rf1#
- 1...Re3
- 2.Rd1#
- 1...Rg3
- 2.Bxg3#
- 1...Ra4
- 2.Bg3#
- 1...Ra5
- 2.Bg3#
- 1...Bb2
- 2.Rd1#
- 1...Bxd2+
- 2.Qxd2#
- 1...Bf1
- 2.Rxf1#
- 1...Bd3
- 2.Bg3#
- 1...Bb7
- 2.Rf1#
- 1...Bc8
- 2.Rf1#
- 1...Ra1
- Tries
- 1.Kxg4?
- threat
- 2.Rd1#
- 1...Rg3+
- 2.Bxg3#
- 1...Be2+
- 2.Rxe2#
- 1...Bxd2
- 2.Qxd2#
- 1...Rd3
- 2.Rf1#
- 1...Bd3
- 2.Sf3#
- 2.Bg3#
- 1...Bc8+!
- threat
- 1.Kh4?
- threat
- 2.Rd1#
- 1...Bxd2
- 2.Qxd2#
- 1...Rd3
- 2.Rf1#
- 1...Be2
- 2.Rxe2#
- 1...Bd3
- 2.Bg3#
- 1...Rxh3+!
- threat
- 1.Kh5?
- threat
- 2.Rd1#
- 1...Bxd2
- 2.Qxd2#
- 1...Rd3
- 2.Rf1#
- 1...Be2
- 2.Rxe2#
- 1...Bd3
- 2.Bg3#
- 1...Rxh3+!
- threat
- 1.Bf4?
- threat
- 2.Rd1#
- 1...Bxd2
- 2.Qxd2#
- 1...Be2
- 2.Rxe2#
- 1...Bd3
- 2.Bg3#
- 1...Rd3!
- threat
- 1.Rf4?
- threat
- 2.Rd1#
- 1...Bxd2
- 2.Qxd2#
- 1...Rd3
- 2.Rf1#
- 1...Be2
- 2.Rxe2#
- 1...Bd3!
- threat
- 1.Qd3?
- threat
- 2.Bg3#
- 2.Rf1#
- 1...Bxd2+
- 2.Qxd2#
- 1...Rxd3
- 2.Rf1#
- 1...Bxd3
- 2.Bg3#
- 1...g3
- 2.Sf3#
- 2.Bxg3#
- 2.Rf1#
- 1...Ra5+!
- threat
- 1.Qc5?
- threat
- 2.Qf2#
- 2.Qxc1#
- 1...Ra1
- 2.Bg3#
- 2.Qf2#
- 1...Rc3
- 2.Qf2#
- 1...Re3
- 2.Qxc1#
- 1...Rf3
- 2.Qxc1#
- 1...Ra5
- 2.Bg3#
- 1...Bb2
- 2.Qf2#
- 1...Be2
- 2.Qf2#
- 1...Bc4
- 2.Qf2#
- 1...g3
- 2.Qxc1#
- 1...Bxd2+!
- threat
- 1.Kxg4?
- Keys
- 1.Kg6!
- threat
- 2.Rd1#
- 1...Bxd2
- 2.Qxd2#
- 1...Rd3
- 2.Rf1#
- 1...Be2
- 2.Rxe2#
- 1...Bd3
- 2.Bg3#
- threat
- 1.Kg6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 10
- Sets
- R(c);N_GUARD::B(G)
- R(c);S_CUTB(e)::R1(H)
- R(c);N_PINR(B)::R1(B)
- R(c);N_GUARD::B(G),XR(c)
- R(c);N_GUARD,P_PINQ(E)::B(G)
- B(a);N_PINR(B)::R1(B)
- B(a);CHECK,OGATE,XR(B)::QAB1(E),XB(a)
- B(e);N_GUARD::R1(H),XB(e)
- B(e);S_CUTR(c)::B(G)
- B(e);N_GUARD::R1(H)
- Tries
- Try
- K(F);N_SPINR(B),P-FLIGHT,XP(d)
- Threat
- R1(B)
- Vars
- R(c);CHECK,N_GUARD::B(G),XR(c)
- B(e);CHECK,N_GUARD::R1(B),XB(e)
- B(a);OGATE,XR(B)::QAB1(E),XB(a)
- R(c);S_CUTB(e)::R1(H)
- Refutation
- B(e);CHECK
- Try
- K(F);N_SPINR(B),S_FLIGHT
- Threat
- R1(B)
- Vars
- B(a);OGATE,XR(B)::QAB1(E),XB(a)
- R(c);S_CUTB(e)::R1(H)
- B(e);N_GUARD::R1(B),XB(e)
- B(e);S_CUTR(c)::B(G)
- Refutation
- R(c);CHECK,XB(C)
- Try
- K(F);N_SPINR(B),P-FLIGHT
- Threat
- R1(B)
- Vars
- B(a);OGATE,XR(B)::QAB1(E),XB(a)
- R(c);S_CUTB(e)::R1(H)
- B(e);N_GUARD::R1(B),XB(e)
- B(e);S_CUTR(c)::B(G)
- Refutation
- R(c);CHECK,XB(C)
- Try
- B(G);N_SPINR(B)
- Threat
- R1(B)
- Vars
- B(a);OGATE,P_PINB(G),XR(B)::QAB1(E),XB(a)
- B(e);N_GUARD::R1(B),XB(e)
- B(e);S_CUTR(c)::B(G)
- Refutation
- R(c);
- Try
- R(H);N_SPINR(B)
- Threat
- R1(B)
- Vars
- B(a);OGATE,P_PINR(H),XR(B)::QAB1(E),XB(a)
- R(c);S_CUTB(e)::R1(H)
- B(e);N_GUARD::R1(B),XB(e)
- Refutation
- B(e);
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- B(a);CHECK,OGATE,XR(B)::QAB1(E),XB(a)
- R(c);XQ(E)::R1(H)
- B(e);XQ(E)::B(G)
- Refutation
- R(c);CHECK
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- R(c);::QAB1(E)
- R(c);N_PINR(B)::QAR2(E),XB(a)
- R(c);::QAR2(E),XB(a)
- R(c);N_GUARD,P_PINQ(E)::B(G)
- B(a);N_PINR(B)::QAB1(E)
- B(e);::QAB1(E)
- P(d);::QAR2(E),XB(a)
- Refutation
- B(a);CHECK,XR(B)
- Try
- Actual
- K(F);N_SPINR(B),P-FLIGHT
- Threat
- R1(B)
- Vars
- B(a);OGATE,XR(B)::QAB1(E),XB(a)
- R(c);S_CUTB(e)::R1(H)
- B(e);N_GUARD::R1(B),XB(e)
- B(e);P_PINS(D),S_CUTR(c)::B(G)
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).