MESON Chess Problem Database
Problem Display
PID: 233545 (8/3p4/3P2p1/2pR1pP1/2P1pPP1/1Pp1k1K1/p2b1N2/B2Q4 w - - 0 1)
Viksna, Kristaps
Freie Presse, 1972
#2
11 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Bc1
- 2.Qe1#
- 1...Be1
- 2.Qxe1#
- 1...c2
- 2.Qxd2#
- 1...fxg4
- 2.Sxg4#
- 1...Bc1
- Tries
- 1.Sh1?
- 1...Be1+
- 2.Qxe1#
- 1...Bc1
- 2.Qe1#
- 1...c2
- 2.Qxd2#
- 1...fxg4!
- 1...Be1+
- 1.Sh3?
- 1...Be1+
- 2.Qxe1#
- 1...Bc1
- 2.Qe1#
- 1...c2
- 2.Qxd2#
- 1...fxg4!
- 1...Be1+
- 1.Bxc3?
- threat
- 2.Bxd2#
- 2.Qxd2#
- 1...Bc1
- 2.Qe1#
- 1...Be1
- 2.Qxe1#
- 1...Bxc3!
- threat
- 1.Qf1?
- threat
- 2.Sd1#
- 1...Be1
- 2.Qxe1#
- 1...c2!
- threat
- 1.b4?
- 1...fxg4
- 2.Sxg4#
- 1...c2
- 2.Qxd2#
- 1...Bc1
- 2.Qe1#
- 1...Be1
- 2.Qxe1#
- 1...cxb4!
- 1...fxg4
- 1.gxf5?
- threat
- 2.Sg4#
- 1...Be1
- 2.Qxe1#
- 1...gxf5!
- threat
- 1.Sh1?
- Keys
- 1.Re5!
- 1...Kd4
- 2.Qxd2#
- 1...fxg4
- 2.Rxe4#
- 1...Bc1
- 2.Qd3#
- 1...Be1
- 2.Qd3#
- 1...c2
- 2.Qf3#
- 1...Kd4
- 1.Re5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(b);N_GUARD::QAR2(B)
- B(b);N_GUARD,P_PINS(C)::QAR2(B),XB(b)
- P(c);N_GUARD::QAB1(B),XB(b)
- P(g);XP(H)::S(C),XP(g)
- Tries
- Try
- S(C);
- Vars
- B(b);CHECK,N_GUARD::QAR2(B),XB(b)
- B(b);N_GUARD::QAR2(B)
- P(c);N_GUARD::QAB1(B),XB(b)
- Refutation
- P(g);XP(H)
- Try
- S(C);
- Vars
- B(b);CHECK,N_GUARD::QAR2(B),XB(b)
- B(b);N_GUARD::QAR2(B)
- P(c);N_GUARD::QAB1(B),XB(b)
- Refutation
- P(g);XP(H)
- Try
- B(A);XP(c)
- Threat
- DUALS(2)
- Vars
- B(b);N_GUARD::QAR2(B)
- B(b);N_GUARD,P_PINS(C)::QAR2(B),XB(b)
- Refutation
- B(b);XB(A)
- Try
- Q(B);
- Threat
- S(C)
- Vars
- B(b);N_GUARD,P_PINS(C)::QAR2(B),XB(b)
- Refutation
- P(c);
- Try
- P(D);
- Vars
- P(g);XP(H)::S(C),XP(g)
- P(c);N_GUARD::QAB1(B),XB(b)
- B(b);N_GUARD::QAR2(B)
- B(b);N_GUARD,P_PINS(C)::QAR2(B),XB(b)
- Refutation
- P(f);XP(D)
- Try
- P(H);XP(g)
- Threat
- S(C)
- Vars
- B(b);N_GUARD,P_PINS(C)::QAR2(B),XB(b)
- Refutation
- P(h);XP(H)
- Try
- Actual
- R(I);P_PINP(e)
- Vars
- K(d);N_SPINP(e),P_SPINB(b),P_SPINP(c),S_FLIGHT::QAR2(B),XB(b)
- P(g);N_GUARD,XP(H)::R1(I),XP(e)
- B(b);OGATE::QAR1(B)
- B(b);OGATE,P_PINS(C)::QAR1(B)
- P(c);::QAR1(B)
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).