MESON Chess Problem Database
Problem Display
PID: 151330 (1B1R4/N2B3p/3N2br/K1pk2rp/7b/nPQ3p1/2p1P3/7q w - - 0 1)
Shanshin, Valery Yurevich
1st Prize, Uralski Problemist, 2009
#2
9 + 12
| 23 | Die Schwalbe | 2013 |
| 56 | The Problemist | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Sc4+
- 2.bxc4#
- 1...Sc4+
- Tries
- 1.Sc4?
- threat
- 2.Bf5#
- 1...Sxc4+
- 2.Qxc4#
- 1...Ke4
- 2.Qd3#
- 1...Rg4
- 2.Qe5#
- 1...Re5
- 2.Qxe5#
- 1...Rf5
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Be4
- 2.Se3#
- 1...Bf5
- 2.Qe5#
- 1...Bf7
- 2.Qd3#
- 1...Be8
- 2.Qd3#
- 1...Sb5!
- threat
- 1.Se4?
- threat
- 2.Sf6#
- 2.Bf5#
- 2.Qd3#
- 1...Sc4+
- 2.Qxc4#
- 1...Kxe4
- 2.Qd3#
- 1...Qxe4
- 2.Bh3#
- 2.Bg4#
- 2.Bf5#
- 2.Bc8#
- 1...c1S
- 2.Sf6#
- 2.Bf5#
- 1...Qf3
- 2.Bf5#
- 1...Qa1
- 2.Sf6#
- 2.Bf5#
- 1...Qd1
- 2.Sf6#
- 2.Bf5#
- 1...Qe1
- 2.Sf6#
- 2.Bf5#
- 1...Qf1
- 2.Bf5#
- 2.Qd3#
- 1...Qg1
- 2.Sf6#
- 2.Bf5#
- 1...Rg4
- 2.Qe5#
- 2.Qd3#
- 1...Re5
- 2.Qxe5#
- 2.Qd3#
- 1...Rf5
- 2.Qd3#
- 1...Bf5
- 2.Qe5#
- 2.Qd3#
- 1...Bf7
- 2.Qd3#
- 1...Be8
- 2.Qd3#
- 1...Sb5
- 2.Sf6#
- 2.Qc4#
- 1...c4
- 2.Bf5#
- 1...Bxe4!
- threat
- 1.Sdb5?
- threat
- 2.Bf5#
- 1...Sc4+
- 2.Qxc4#
- 1...Ke4
- 2.Qd3#
- 1...Sxb5
- 2.Qc4#
- 1...c4
- 2.Qd4#
- 1...Rg4
- 2.Qe5#
- 1...Re5
- 2.Qxe5#
- 1...Rf5
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bf5
- 2.Qe5#
- 1...Bf7
- 2.Qd3#
- 1...Be8
- 2.Qd3#
- 1...Be4!
- threat
- 1.Sf5?
- threat
- 2.Qe5#
- 2.Qd3#
- 1...Sc4+
- 2.Qxc4#
- 1...Ke4
- 2.Qe5#
- 2.Qd3#
- 1...Rxf5
- 2.Qd3#
- 1...Bxf5
- 2.Qe5#
- 1...c4
- 2.Qd4#
- 2.Qe5#
- 1...c1S
- 2.Qe5#
- 1...Qf3
- 2.Qe5#
- 2.Qxf3#
- 1...Qe4
- 2.Bc8#
- 1...Qa1
- 2.Qf3#
- 1...Qd1
- 2.Qe5#
- 2.Qf3#
- 1...Qg1
- 2.Qe5#
- 2.Qf3#
- 1...Rg4
- 2.Qe5#
- 1...Sb5
- 2.Qe5#
- 2.Qc4#
- 1...Qe1!
- threat
- 1.Sdc8?
- threat
- 2.Bf5#
- 1...Sc4+
- 2.Qxc4#
- 1...Ke4
- 2.Qd3#
- 1...Be4
- 2.Se7#
- 1...Rg4
- 2.Qe5#
- 1...Re5
- 2.Qxe5#
- 1...Rf5
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bf5
- 2.Qe5#
- 1...Bf7
- 2.Qd3#
- 1...Be8
- 2.Qd3#
- 1...Sb5
- 2.Qc4#
- 1...c4!
- threat
- 1.Sc6?
- threat
- 2.Se7#
- 1...Sc4+
- 2.Qxc4#
- 2.bxc4#
- 1...c4
- 2.Qd4#
- 1...Rg4
- 2.Qe5#
- 1...Re5
- 2.Qxe5#
- 1...Rf5
- 2.Qd2#
- 2.Qd3#
- 1...Qe4!
- threat
- 1.Sac8?
- threat
- 2.Sb6#
- 2.Se7#
- 1...Sc4+
- 2.bxc4#
- 1...Qe4
- 2.Sb6#
- 1...Rg4
- 2.Sb6#
- 1...Re5
- 2.Sb6#
- 1...Rf5
- 2.Sb6#
- 1...c4!
- threat
- 1.Qd3+?
- 1...Ke5
- 2.Se4#
- 2.Se8#
- 1...Bxd3!
- 1...Ke5
- 1.Qc4+?
- 1...Ke5
- 2.Se4#
- 2.Se8#
- 1...Sxc4+!
- 1...Ke5
- 1.Sc4?
- Keys
- 1.Sb7!
- threat
- 2.Bf5#
- 1...Sc4+
- 2.Qxc4#
- 1...Ke4
- 2.Qd3#
- 1...Rg4
- 2.Qe5#
- 1...Re5
- 2.Qxe5#
- 1...Rf5
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Be4
- 2.Qxc5#
- 1...Bf5
- 2.Qe5#
- 1...Bf7
- 2.Qd3#
- 1...Be8
- 2.Qd3#
- 1...Sb5
- 2.Qc4#
- threat
- 1.Sb7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 10
- REMOVED MATES = 0
- Sets
- S(c);CHECK,OGATE::P(B),XS(c)
- Tries
- Try
- S(E);
- Threat
- R(I)+B(G)
- Vars
- S(c);CHECK,OGATE,XS(E)::QAB1(C),XS(c)
- K(g);S_FLIGHT::QAB1(C)
- R(h);N_GUARD::QAR1(C)
- R(h);N_GUARD::QAR1(C),XR(h)
- R(h);S_CUTB(j)::QAR2(C)
- B(j);N_GUARD::QAR2(C),XB(j)
- B(j);SBLOCK::S(E)
- B(j);S_CUTR(h)::QAR1(C)
- B(j);N_GUARD::QAR2(C)
- Refutation
- S(c);
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- S(c);CHECK,N_GUARD::QAB1(C),XS(c)
- K(g);S_FLIGHT,XS(E)::QAB1(C)
- Q(a);::R(I)+B(G)
- R(h);::QAR2(C)
- B(j);::QAR2(C)
- P(f);::R(I)+B(G)
- Refutation
- B(j);XS(E)
- Try
- S(E);
- Threat
- R(I)+B(G)
- Vars
- S(c);CHECK,N_GUARD::QAB1(C),XS(c)
- K(g);S_FLIGHT::QAB1(C)
- S(c);N_GUARD,XS(E)::QAB1(C)
- P(f);N_GUARD::QAR1(C)
- R(h);N_GUARD::QAR1(C)
- R(h);N_GUARD::QAR1(C),XR(h)
- R(h);S_CUTB(j)::QAR2(C)
- B(j);N_GUARD::QAR2(C),XB(j)
- B(j);S_CUTR(h)::QAR1(C)
- B(j);N_GUARD::QAR2(C)
- Refutation
- B(j);
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- S(c);CHECK,N_GUARD::QAB1(C),XS(c)
- R(h);XS(E)::QAR2(C)
- B(j);XS(E)::QAR1(C)
- P(b);::QAR1(C)
- Q(a);SBLOCK::R(I)+B(G)
- Q(a);N_GUARD::QAB(C)
- R(h);::QAR1(C)
- Refutation
- Q(a);P_PINQ(C)
- Try
- S(E);
- Threat
- R(I)+B(G)
- Vars
- S(c);CHECK,N_GUARD::QAB1(C),XS(c)
- K(g);S_FLIGHT::QAB1(C)
- B(j);SBLOCK::S(E)
- R(h);N_GUARD::QAR1(C)
- R(h);N_GUARD::QAR1(C),XR(h)
- R(h);S_CUTB(j)::QAR2(C)
- B(j);N_GUARD::QAR2(C),XB(j)
- B(j);S_CUTR(h)::QAR1(C)
- B(j);N_GUARD::QAR2(C)
- S(c);N_GUARD::QAB1(C)
- Refutation
- P(f);
- Try
- S(F);
- Threat
- S(F)
- Vars
- P(f);N_GUARD::QAR1(C)
- R(h);N_GUARD::QAR1(C)
- R(h);N_GUARD::QAR1(C),XR(h)
- Refutation
- Q(a);
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- S(c);CHECK,OGATE::P(B),XS(c)
- Q(a);::S(F)
- R(h);::S(F)
- Refutation
- P(f);
- Try
- Q(C);CHECK
- Refutation
- B(j);XQ(C)
- Try
- Q(C);CHECK
- Refutation
- S(c);CHECK,XQ(C)
- Try
- Actual
- S(E);
- Threat
- R(I)+B(G)
- Vars
- S(c);CHECK,N_GUARD::QAB1(C),XS(c)
- K(g);S_FLIGHT::QAB1(C)
- R(h);N_GUARD::QAR1(C)
- R(h);N_GUARD::QAR1(C),XR(h)
- R(h);S_CUTB(j)::QAR2(C)
- B(j);N_GUARD::QAR2(C),XB(j)
- B(j);SBLOCK::QAR1(C),XP(f)
- B(j);S_CUTR(h)::QAR1(C)
- B(j);N_GUARD::QAR2(C)
- S(c);N_GUARD::QAB1(C)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).