MESON Chess Problem Database
Problem Display
PID: 67527 (2Q1b3/1r3N2/1Pp2p2/2Bk1N2/1P3RB1/1r3P2/3P1K2/b1R5 w - - 0 1)
Marker, Yuri
Pankratiev, Aleksandr Nikolaevich
4th HM., diagrammes, 1989
#2
12 + 7
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Se3#
- 1...Rb2
- 2.Se3#
- 2.Rd4#
- 1...Rc3
- 2.Rd4#
- 1...Re3
- 2.Sxe3#
- 1...Rxf3+
- 2.Bxf3#
- 1...Rxb4
- 2.Se3#
- 1...Rxb6
- 2.Se7#
- 1...Re7
- 2.Sxe7#
- 1...Rb8
- 2.Se7#
- 1...Bc3
- 2.Se3#
- 1...Bd4+
- 2.Rxd4#
- 1...Bd7
- 2.Se7#
- 1...Rb1
- Tries
- 1.Be3?
- threat
- 2.Rc5#
- 1...Rd7
- 2.Qxc6#
- 1...Bd7
- 2.Se7#
- 1...Rc3
- 2.Rd4#
- 1...Bd4
- 2.Rxd4#
- 1...c5
- 2.Rxc5#
- 1...Bc3!
- threat
- 1.Bd4?
- threat
- 2.Rc5#
- 1...Rxf3+
- 2.Bxf3#
- 1...Bxd4+
- 2.Rxd4#
- 1...Rd7
- 2.Qxc6#
- 1...Bc3
- 2.Se3#
- 1...Bd7
- 2.Se7#
- 1...c5
- 2.Rxc5#
- 1...Rc3!
- threat
- 1.Bd6?
- threat
- 2.Rc5#
- 1...Rxf3+
- 2.Bxf3#
- 1...Bd4+
- 2.Rxd4#
- 1...Bd7
- 2.Se7#
- 1...Rc3
- 2.Rd4#
- 1...Bc3
- 2.Se3#
- 1...c5
- 2.Rxc5#
- 1...Rd7!
- threat
- 1.Be7?
- threat
- 2.Rc5#
- 1...Rxf3+
- 2.Bxf3#
- 1...Bd4+
- 2.Rxd4#
- 1...Rd7
- 2.Qxc6#
- 1...Rc3
- 2.Rd4#
- 1...Bc3
- 2.Se3#
- 1...c5
- 2.Rxc5#
- 1...Bd7!
- threat
- 1.Qd7+?
- 1...Bxd7
- 2.Se7#
- 1...Rxd7!
- 1...Bxd7
- 1.Qd8+?
- 1...Rd7
- 2.Se7#
- 1...Bd7
- 2.Se7#
- 1...Ke6!
- 1...Rd7
- 1.Qxe8?
- threat
- 2.Qe4#
- 1...Rxf3+
- 2.Bxf3#
- 1...Bd4+
- 2.Rxd4#
- 1...Rxb4
- 2.Se3#
- 1...Re7
- 2.Sxe7#
- 1...Re3
- 2.Sxe3#
- 1...Be5!
- threat
- 1.Be3?
- Keys
- 1.Bf8!
- threat
- 2.Rc5#
- 1...Rxf3+
- 2.Bxf3#
- 1...Bd4+
- 2.Rxd4#
- 1...Rd7
- 2.Qxc6#
- 1...Bd7
- 2.Se7#
- 1...Rc3
- 2.Rd4#
- 1...Bc3
- 2.Se3#
- 1...c5
- 2.Rxc5#
- threat
- 1.Bf8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- R(b);N_GUARD::S(I)
- R(b);S_CUTB(a)::R1(F)
- R(b);N_GUARD::S(I),XR(b)
- R(b);CHECK,OGATE,XP(D)::B(G),XR(b)
- R(b);N_GUARD,XP(E)::S(I)
- R(f);N_GUARD,XP(J)::S(I)
- R(f);N_GUARD::S(I),XR(f)
- R(f);N_GUARD::S(I)
- B(a);S_CUTR(b)::S(I)
- B(a);CHECK,N_GUARD::R1(F),XB(a)
- B(g);S_CUTR(f)::S(I)
- Tries
- Try
- B(H);
- Threat
- R1(A)
- Vars
- R(f);S_CUTB(g)::QAB1(L),XP(d)
- B(g);S_CUTR(f)::S(I)
- R(b);S_CUTB(a)::R1(F)
- B(a);N_GUARD,P_PINB(H)::R1(F),XB(a)
- P(d);::R1(A),XP(d)
- Refutation
- B(a);
- Try
- B(H);
- Threat
- R1(A)
- Vars
- R(b);CHECK,OGATE,XP(D)::B(G),XR(b)
- B(a);CHECK,OGATE,XB(H)::R1(F),XB(a)
- R(f);S_CUTB(g)::QAB1(L),XP(d)
- B(a);S_CUTR(b)::S(I)
- B(g);S_CUTR(f)::S(I)
- P(d);::R1(A),XP(d)
- Refutation
- R(b);
- Try
- B(H);
- Threat
- R1(A)
- Vars
- R(b);CHECK,OGATE,XP(D)::B(G),XR(b)
- B(a);CHECK,N_GUARD::R1(F),XB(a)
- B(g);S_CUTR(f)::S(I)
- R(b);S_CUTB(a)::R1(F)
- B(a);S_CUTR(b)::S(I)
- P(d);::R1(A),XP(d)
- Refutation
- R(f);
- Try
- B(H);
- Threat
- R1(A)
- Vars
- R(b);CHECK,OGATE,XP(D)::B(G),XR(b)
- B(a);CHECK,N_GUARD::R1(F),XB(a)
- R(f);S_CUTB(g)::QAB1(L),XP(d)
- R(b);S_CUTB(a)::R1(F)
- B(a);S_CUTR(b)::S(I)
- P(d);::R1(A),XP(d)
- Refutation
- B(g);
- Try
- Q(L);CHECK
- Vars
- B(g);XQ(L)::S(I)
- Refutation
- R(f);XQ(L)
- Try
- Q(L);CHECK
- Vars
- R(f);P_SPINR(f)::S(I)
- B(g);P_SPINB(g)::S(I)
- Refutation
- K(c);S_FLIGHT
- Try
- Q(L);XB(g)
- Threat
- QAB1(L)
- Vars
- R(b);CHECK,OGATE,XP(D)::B(G),XR(b)
- B(a);CHECK,N_GUARD::R1(F),XB(a)
- R(b);N_GUARD,XP(E)::S(I)
- R(f);N_GUARD::S(I),XR(f)
- R(b);N_GUARD::S(I),XR(b)
- Refutation
- B(a);
- Try
- Actual
- B(H);
- Threat
- R1(A)
- Vars
- R(b);CHECK,OGATE,XP(D)::B(G),XR(b)
- B(a);CHECK,N_GUARD::R1(F),XB(a)
- R(f);S_CUTB(g)::QAB1(L),XP(d)
- B(g);S_CUTR(f)::S(I)
- R(b);S_CUTB(a)::R1(F)
- B(a);S_CUTR(b)::S(I)
- P(d);::R1(A),XP(d)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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