MESON Chess Problem Database
Problem Display
PID: 277875 (n4B2/Nn3PNK/2P4b/1p2Rp2/3k4/R2P2Q1/b2Ppr2/1r2q2B w - - 0 1)
Soroka, Ivan Ivanovich
Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)
diagrammes, 1981
#2
12 + 11
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Sxb5#
- 1...Rc1
- 2.Sxb5#
- 1...Rd1
- 2.Sxb5#
- 1...Rb3
- 2.Se6#
- 2.Rd5#
- 1...Rg2
- 2.Sxf5#
- 1...Rh2
- 2.Sxf5#
- 1...Rf4
- 2.Qe3#
- 1...Bb3
- 2.Sxb5#
- 1...Bd5
- 2.Rxd5#
- 1...Be6
- 2.Sxe6#
- 1...Be3
- 2.Qxe3#
- 2.dxe3#
- 1...Bxg7
- 2.Qe3#
- 1...Sa5
- 2.Bc5#
- 1...Sc5
- 2.Bxc5#
- 1...Sd8
- 2.Bc5#
- 1...b4
- 2.Sb5#
- 1...Ra1
- Tries
- 1.Bb4?
- threat
- 2.Sxb5#
- 2.Bc3#
- 1...Qxd2
- 2.Sxb5#
- 1...Bxd2
- 2.Sxb5#
- 1...Rf4
- 2.Bc3#
- 2.Qe3#
- 1...Bf4
- 2.Bc3#
- 1...f4
- 2.Bc3#
- 1...Qc1
- 2.Sxb5#
- 1...Rc1
- 2.Sxb5#
- 1...Rb3
- 2.Sxb5#
- 2.Se6#
- 2.Rd5#
- 1...Rf3
- 2.Sxb5#
- 1...Bc4
- 2.Bc3#
- 1...Bd5
- 2.Sxb5#
- 2.Rxd5#
- 1...Be3
- 2.Sxb5#
- 2.Qxe3#
- 2.dxe3#
- 1...Sd6
- 2.Bc3#
- 2.Bc5#
- 1...Sc7
- 2.Bc3#
- 1...Rxb4!
- threat
- 1.Rb3?
- threat
- 2.Sxb5#
- 2.Se6#
- 2.Rd5#
- 1...Qxh1
- 2.Sxb5#
- 2.Se6#
- 1...Rxb3
- 2.Se6#
- 2.Rd5#
- 1...Bxb3
- 2.Sxb5#
- 1...Bxg7
- 2.Sxb5#
- 2.Rd5#
- 2.Qe3#
- 1...Rf4
- 2.Rd5#
- 2.Qe3#
- 1...Bf4
- 2.Rd5#
- 1...f4
- 2.Rd5#
- 1...Rg2
- 2.Sxb5#
- 2.Sxf5#
- 2.Se6#
- 1...Rf3
- 2.Sxb5#
- 2.Se6#
- 1...Sc5
- 2.Sxb5#
- 2.Bxc5#
- 2.Rd5#
- 1...Sd6
- 2.Se6#
- 2.Rd5#
- 1...Sd8
- 2.Sxb5#
- 2.Bc5#
- 2.Rd5#
- 1...Sb6
- 2.Sxb5#
- 2.Se6#
- 1...b4
- 2.Sb5#
- 2.Se6#
- 2.Rd5#
- 1...Sc7!
- threat
- 1.Ra4+?
- 1...Rb4
- 2.Sxb5#
- 1...Bc4
- 2.Se6#
- 2.Rd5#
- 1...b4
- 2.Sb5#
- 1...bxa4!
- 1...Rb4
- 1.Rxe2?
- threat
- 2.Qe5#
- 1...Rxe2
- 2.Sxf5#
- 1...Bxg7
- 2.Qe3#
- 2.Qxg7#
- 1...Rb3
- 2.Se6#
- 1...Rf4
- 2.Qe3#
- 1...Bb3
- 2.Sxb5#
- 1...Be3
- 2.Qxe3#
- 2.dxe3#
- 1...Bf4
- 2.Sxf5#
- 1...f4
- 2.Sf5#
- 1...Qxe2!
- threat
- 1.Re3?
- threat
- 2.Qe5#
- 1...Bxe3
- 2.Qxe3#
- 2.dxe3#
- 1...Bxg7
- 2.Qxg7#
- 1...Bf4
- 2.Sxf5#
- 1...f4
- 2.Sf5#
- 1...Rf4!
- threat
- 1.Re4+?
- 1...Kd5
- 2.Qe5#
- 1...fxe4!
- 1...Kd5
- 1.Rxb5?
- threat
- 2.Qe5#
- 1...Rxb5
- 2.Sxb5#
- 1...Bxg7
- 2.Bxg7#
- 2.Qe3#
- 2.Qxg7#
- 1...Rb3
- 2.Se6#
- 2.Rd5#
- 1...Rf4
- 2.Qe3#
- 1...Bd5
- 2.Rxd5#
- 1...Bf4
- 2.Sxf5#
- 1...Sc5
- 2.Bxc5#
- 1...f4
- 2.Sf5#
- 1...Bb3!
- threat
- 1.Rc5?
- threat
- 2.Qe5#
- 1...Bxg7
- 2.Qe3#
- 2.Qxg7#
- 1...Rb3
- 2.Se6#
- 2.Rd5#
- 1...Rf4
- 2.Qe3#
- 1...Bb3
- 2.Sxb5#
- 1...Bd5
- 2.Rxd5#
- 1...Bf4
- 2.Sxf5#
- 1...f4
- 2.Sf5#
- 1...Sxc5!
- threat
- 1.Rxf5?
- threat
- 2.Qe5#
- 1...Rxf5
- 2.Sxf5#
- 1...Bxg7
- 2.Bxg7#
- 2.Qe3#
- 2.Qxg7#
- 1...Rb3
- 2.Se6#
- 2.Rd5#
- 1...Rf4
- 2.Qe3#
- 1...Bb3
- 2.Sxb5#
- 1...Bf4!
- threat
- 1.Re6?
- threat
- 2.Qe5#
- 1...Bxe6
- 2.Sxe6#
- 1...Bxg7
- 2.Qe3#
- 2.Qxg7#
- 1...Rf4
- 2.Qe3#
- 1...Bb3
- 2.Sxb5#
- 1...Bf4
- 2.Sxf5#
- 1...f4
- 2.Sf5#
- 1...Rb3!
- threat
- 1.cxb7?
- threat
- 2.Sc6#
- 2.Bc5#
- 1...Qxh1
- 2.Bc5#
- 1...Rf4
- 2.Sc6#
- 2.Qe3#
- 1...Bf4
- 2.Sc6#
- 1...f4
- 2.Sc6#
- 1...Rc1
- 2.Sxb5#
- 1...Bd5
- 2.Rxd5#
- 1...Qc1!
- threat
- 1.Bb4?
- Keys
- 1.Re8!
- threat
- 2.Qe5#
- 1...Bxg7
- 2.Qe3#
- 2.Qxg7#
- 1...Bb3
- 2.Sxb5#
- 1...Rb3
- 2.Se6#
- 1...Rf4
- 2.Qe3#
- 1...Be6
- 2.Sxe6#
- 1...Bf4
- 2.Sxf5#
- 1...f4
- 2.Sf5#
- threat
- 1.Re8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 11
- Sets
- R(a);N_GUARD::S(H),XP(g)
- R(e);N_GUARD::S(J),XP(h)
- R(e);S_CUTB(i)::QAB1(E)
- B(c);S_CUTR(a)::S(H),XP(g)
- B(c);N_GUARD::R1(F),XB(c)
- B(c);N_GUARD::S(J),XB(c)
- B(i);N_GUARD,XS(J)::QAB1(E)
- S(j);N_GUARD::B(L)
- S(j);N_GUARD::B(L),XS(j)
- P(g);S_CUTR(a)::S(H)
- Tries
- Try
- B(L);
- Threat
- DUALS(2)
- Vars
- Q(b);XP(B)::S(H),XP(g)
- B(i);XP(B)::S(H),XP(g)
- B(i);::B(L)
- P(h);::B(L)
- Q(b);::S(H),XP(g)
- R(a);::S(H),XP(g)
- R(e);::S(H),XP(g)
- B(c);::B(L)
- S(k);::B(L)
- Refutation
- R(a);XB(L)
- Try
- R(C);
- Threat
- DUALS(3)
- Vars
- B(c);XR(C)::S(H),XP(g)
- B(i);::R1(F)
- P(h);::R1(F)
- Refutation
- S(k);
- Try
- R(C);CHECK
- Vars
- R(a);P_SPINR(a)::S(H),XP(g)
- P(g);P_SPINP(g)::S(H)
- Refutation
- P(g);XR(C)
- Try
- R(F);XP(d)
- Threat
- QAB1(E)
- Vars
- R(e);N_GUARD,XR(F)::S(J),XP(h)
- R(a);S_CUTB(c)::S(J)
- R(e);S_CUTB(i)::QAB1(E)
- B(c);S_CUTR(a)::S(H),XP(g)
- B(i);S_CUTR(e)::S(J),XP(h)
- P(h);S_CUTR(e)::S(J)
- Refutation
- Q(b);XR(F)
- Try
- R(F);
- Threat
- QAB1(E)
- Vars
- B(i);OGATE,XS(J)::QAB(E),XB(i)
- B(i);S_CUTR(e)::S(J),XP(h)
- P(h);S_CUTR(e)::S(J)
- Refutation
- R(e);
- Try
- R(F);CHECK
- Vars
- K(f);P-FLIGHT::QAR1(E)
- Refutation
- P(h);XR(F)
- Try
- R(F);XP(g)
- Threat
- QAB1(E)
- Vars
- R(a);XR(F)::S(H),XR(a)
- R(e);S_CUTB(i)::QAB1(E)
- B(c);N_GUARD::R1(F),XB(c)
- B(i);S_CUTR(e)::S(J),XP(h)
- S(j);N_GUARD::B(L),XS(j)
- P(h);S_CUTR(e)::S(J)
- Refutation
- B(c);
- Try
- R(F);
- Threat
- QAB1(E)
- Vars
- R(e);S_CUTB(i)::QAB1(E)
- B(c);S_CUTR(a)::S(H),XP(g)
- B(c);N_GUARD::R1(F),XB(c)
- B(i);S_CUTR(e)::S(J),XP(h)
- P(h);S_CUTR(e)::S(J)
- Refutation
- S(j);XR(F)
- Try
- R(F);XP(h)
- Threat
- QAB1(E)
- Vars
- R(e);XR(F)::S(J),XR(e)
- R(e);S_CUTB(i)::QAB1(E)
- B(c);S_CUTR(a)::S(H),XP(g)
- Refutation
- B(i);
- Try
- R(F);
- Threat
- QAB1(E)
- Vars
- B(c);XR(F)::S(J),XB(c)
- R(e);S_CUTB(i)::QAB1(E)
- B(c);S_CUTR(a)::S(H),XP(g)
- B(i);S_CUTR(e)::S(J),XP(h)
- P(h);S_CUTR(e)::S(J)
- Refutation
- R(a);
- Try
- P(G);XS(j)
- Threat
- DUALS(2)
- Vars
- Q(b);XB(A)::B(L)
- B(i);::S(H)
- P(h);::S(H)
- R(a);N_GUARD::S(H),XP(g)
- B(c);N_GUARD::R1(F),XB(c)
- Refutation
- Q(b);
- Try
- Actual
- R(F);
- Threat
- QAB1(E)
- Vars
- B(c);S_CUTR(a)::S(H),XP(g)
- R(a);S_CUTB(c)::S(J)
- R(e);S_CUTB(i)::QAB1(E)
- B(c);N_GUARD::S(J),XB(c)
- B(i);S_CUTR(e)::S(J),XP(h)
- P(h);S_CUTR(e)::S(J)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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