MESON Chess Problem Database
Problem Display
PID: 271696 (4nnK1/1N2p3/Rp3ppB/2R1Pk1P/Q4N1b/1B2pP2/5q2/1b6 w - - 0 1)
Murashev, Pavel Aleksandrovich
Shakhmatnaya Moskva, 2023
#2
11 + 11
SOLUTION
- SOUND
- Sets
- 1...Ba2
- 2.Qe4#
- 1...Be4
- 2.Qxe4#
- 1...Se6
- 2.Bxe6#
- 1...Sd7
- 2.Be6#
- 1...Sh7
- 2.Be6#
- 1...b5
- 2.e6#
- 1...Ba2
- Tries
- 1.Sg2?
- threat
- 2.Qf4#
- 2.Qg4#
- 1...Qxg2
- 2.Qf4#
- 1...Qxf3
- 2.Sxh4#
- 1...bxc5
- 2.Qf4#
- 1...fxe5
- 2.Qf4#
- 1...Qg3
- 2.Sxe3#
- 1...Be4
- 2.Qxe4#
- 1...Bg3
- 2.Qg4#
- 1...Bg5
- 2.Qg4#
- 1...Se6
- 2.Qg4#
- 1...g5
- 2.Qg4#
- 1...gxh5!
- threat
- 1.Sd3?
- threat
- 2.Qe4#
- 2.Qf4#
- 2.Qg4#
- 1...Bxd3
- 2.Qf4#
- 2.Qg4#
- 1...fxe5
- 2.Qf4#
- 1...gxh5
- 2.Qe4#
- 1...Qg1
- 2.Qe4#
- 2.Qf4#
- 1...Qg3
- 2.Qe4#
- 1...Qg2
- 2.Qe4#
- 2.Qf4#
- 1...Qh2
- 2.Qe4#
- 2.Qg4#
- 1...Bg3
- 2.Qe4#
- 2.Qg4#
- 1...Bg5
- 2.Qe4#
- 2.Qg4#
- 1...Sd6
- 2.Qf4#
- 2.Qg4#
- 1...Se6
- 2.Qe4#
- 2.Qg4#
- 1...g5
- 2.Qe4#
- 2.Qg4#
- 1...Qxf3!
- threat
- 1.Sxg6?
- threat
- 2.Sxe7#
- 2.Qf4#
- 2.Qg4#
- 1...Qxf3
- 2.Sxh4#
- 2.Sxe7#
- 1...Sxg6
- 2.Qg4#
- 1...bxc5
- 2.Qf4#
- 2.Qg4#
- 1...fxe5
- 2.Qf4#
- 1...Qg1
- 2.Qf4#
- 1...Qg2
- 2.Qf4#
- 1...Qh2
- 2.Sxe7#
- 2.Qg4#
- 1...Be4
- 2.Sxe7#
- 2.Qxe4#
- 1...Bg3
- 2.Sxe7#
- 2.Qg4#
- 1...Bg5
- 2.Sxe7#
- 2.Qg4#
- 1...Se6
- 2.Sxe7#
- 2.Qg4#
- 1...e6
- 2.Se7#
- 2.Qf4#
- 2.Qg4#
- 1...Qg3!
- threat
- 1.Qd7+?
- 1...Se6
- 2.Bxe6#
- 2.Qxe6#
- 1...Sxd7
- 2.Be6#
- 1...e6!
- 1...Se6
- 1.Sg2?
- Keys
- 1.Sd5!
- threat
- 2.Sxe7#
- 1...Kxe5
- 2.Sxb6#
- 1...Ke6
- 2.Sxe3#
- 1...bxc5
- 2.Qf4#
- 1...fxe5
- 2.Qg4#
- 1...e6
- 2.Se7#
- 2.Qf4#
- threat
- 1.Sd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 6
- Sets
- B(a);N_GUARD,P_PINB(A)::QAB1(C)
- B(a);N_GUARD::QAB1(C),XB(a)
- S(k);N_GUARD::B(A),XS(k)
- S(k);N_GUARD::B(A)
- P(f);N_GUARD::R(E)+P(F)
- Tries
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- Q(b);XS(D)::QAR1(C)
- Q(b);N_GUARD,XP(B)::S(D),XB(d)
- P(f);XR(E)::QAR1(C)
- P(g);P_SPINP(g),XP(F)::QAR1(C)
- Q(b);N_GUARD::S(D),XP(c)
- B(a);N_GUARD::QAB1(C),XB(a)
- B(d);::QAB1(C)
- S(k);::QAB1(C)
- P(h);::QAB1(C)
- Refutation
- P(h);XP(G)
- Try
- S(D);
- Threat
- DUALS(3)
- Vars
- P(g);P_SPINP(g),XP(F)::QAR1(C)
- P(h);XP(G)::QAB1(C)
- Q(b);::QAB1(C)
- Refutation
- Q(b);XP(B)
- Try
- S(D);XP(h)
- Threat
- DUALS(3)
- Vars
- S(k);XS(D)::QAB1(C)
- P(g);P_SPINP(g),XP(F)::QAR1(C)
- Q(b);P_PINS(D)::QAR1(C)
- Refutation
- Q(b);P_PINS(D)
- Try
- Q(C);CHECK
- Vars
- S(k);N_GUARD,XQ(C)::B(A)
- Refutation
- P(i);P_SPINP(i)
- Try
- Actual
- S(D);
- Threat
- S(D),XP(i)
- Vars
- K(e);P-FLIGHT,XP(F)::R(E)+S(D),XP(f)
- K(e);P_SPINP(f),S_CUTQ(b),S_FLIGHT::B(A)+S(D),XP(c)
- P(f);XR(E)::QAR1(C)
- P(g);SBLOCK,XP(F)::QAB1(C)
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).