MESON Chess Problem Database
Problem Display
PID: 17590 (4q3/N1Pn1prb/pp1p4/1PkB2b1/K2R3r/5N2/1R5B/6Q1 w - - 0 1)
Loshinski, Lev Ilich
2nd Prize, Trud, 1947
#2
10 + 11
| 14752 | Soviet Chess Compositions (1945-1947) | 1949 |
| 3105 | FIDE Album (1945-1955) | 1964 |
| 5314 | Grossmeister Shakhmatnoi Kompozitsii | 1980 |
SOLUTION
- SOUND
- Sets
- 1...Qe1
- 2.c8Q#
- 2.c8R#
- 1...Qe2
- 2.c8Q#
- 2.c8R#
- 1...Qe3
- 2.c8Q#
- 2.c8R#
- 1...Qe4
- 2.c8Q#
- 2.c8R#
- 1...Qe5
- 2.c8Q#
- 2.c8R#
- 1...Qe6
- 2.c8Q#
- 2.c8R#
- 1...Qe7
- 2.c8Q#
- 2.c8R#
- 1...Rxd4+
- 2.Qxd4#
- 1...Re4
- 2.Rc2#
- 1...Rg6
- 2.Rc2#
- 1...Bc2+
- 2.Rxc2#
- 1...Bg8
- 2.Rc2#
- 1...axb5+
- 2.Rxb5#
- 1...f5
- 2.Rc2#
- 1...Qe1
- Tries
- 1.Bb3?
- threat
- 2.Bxd6#
- 1...Rxd4+
- 2.Qxd4#
- 1...Rxh2
- 2.Rd5#
- 1...Qe5
- 2.c8Q#
- 2.c8R#
- 1...Qe6
- 2.c8Q#
- 2.c8R#
- 1...Qe7
- 2.c8Q#
- 2.c8R#
- 1...Qf8
- 2.Rf4#
- 1...Rf4
- 2.Re4#
- 1...Rh6
- 2.Rd5#
- 1...Rg6
- 2.Rc2#
- 1...Bf4
- 2.Rd5#
- 1...Be7
- 2.Rg4#
- 1...Se5
- 2.Rf4#
- 1...d5
- 2.Rc4#
- 1...axb5+!
- threat
- 1.Be6?
- threat
- 2.Bxd6#
- 2.Rc4#
- 2.Rf4#
- 1...Rxd4+
- 2.Qxd4#
- 1...Bc2+
- 2.Rxc2#
- 1...axb5+
- 2.Rxb5#
- 1...Qxe6
- 2.c8Q#
- 2.c8R#
- 1...Rxh2
- 2.Rc4#
- 1...fxe6
- 2.Bxd6#
- 1...Qe7
- 2.Rc4#
- 2.Rf4#
- 2.c8Q#
- 2.c8R#
- 1...Qf8
- 2.Rc4#
- 2.Rf4#
- 1...Re4
- 2.Bxd6#
- 2.Rc2#
- 2.Rc4#
- 1...Rf4
- 2.Rc4#
- 2.Re4#
- 2.Rxf4#
- 1...Rg4
- 2.Bxd6#
- 2.Rc4#
- 1...Bc1
- 2.Bxd6#
- 2.Rc4#
- 1...Bd2
- 2.Bxd6#
- 2.Rc4#
- 1...Be3
- 2.Bxd6#
- 1...Bf4
- 2.Rc4#
- 1...Bf6
- 2.Bxd6#
- 2.Rc4#
- 1...Bh6
- 2.Bxd6#
- 2.Rc4#
- 1...Be7
- 2.Rc4#
- 2.Rg4#
- 1...Bd8
- 2.Bxd6#
- 2.Rc4#
- 2.Rg4#
- 1...Be4
- 2.Bxd6#
- 2.Rc4#
- 1...Se5
- 2.Rc4#
- 2.Rf4#
- 1...d5!
- threat
- 1.Bxf7?
- threat
- 2.Bxd6#
- 2.Rc4#
- 1...Rxd4+
- 2.Qxd4#
- 1...Bc2+
- 2.Rxc2#
- 1...axb5+
- 2.Rxb5#
- 1...Qxf7
- 2.Bxd6#
- 2.c8Q#
- 2.c8R#
- 1...Rxh2
- 2.Rc4#
- 1...Rxf7
- 2.Bxd6#
- 1...Qe3
- 2.Bxd6#
- 2.c8Q#
- 2.c8R#
- 1...Qe5
- 2.Rc4#
- 2.c8Q#
- 2.c8R#
- 1...Qe6
- 2.c8Q#
- 2.c8R#
- 1...Qe7
- 2.Rc4#
- 2.c8Q#
- 2.c8R#
- 1...Qf8
- 2.Rc4#
- 2.Rf4#
- 1...Rf4
- 2.Rc4#
- 2.Re4#
- 1...Rh6
- 2.Rc4#
- 1...Rg6
- 2.Rc2#
- 2.Rc4#
- 1...Be3
- 2.Bxd6#
- 1...Bf4
- 2.Rc4#
- 1...Be7
- 2.Rc4#
- 2.Rg4#
- 1...Se5
- 2.Rc4#
- 2.Rf4#
- 1...d5!
- threat
- 1.Re4+?
- 1...Kxd5
- 2.Qd4#
- 1...Be3!
- 1...Kxd5
- 1.Qc1+?
- 1...Bc2+
- 2.Rxc2#
- 2.Qxc2#
- 1...Bxc1!
- 1...Bc2+
- 1.Bb3?
- Keys
- 1.Ba2!
- threat
- 2.Bxd6#
- 1...Rxd4+
- 2.Qxd4#
- 1...Bc2+
- 2.Rxc2#
- 1...axb5+
- 2.Rxb5#
- 1...Rxh2
- 2.Rd5#
- 1...Qe5
- 2.c8Q#
- 2.c8R#
- 1...Qe6
- 2.c8Q#
- 2.c8R#
- 1...Qe7
- 2.c8Q#
- 2.c8R#
- 1...Qf8
- 2.Rf4#
- 1...Rf4
- 2.Re4#
- 1...Rh6
- 2.Rd5#
- 1...Rg6
- 2.Rc2#
- 1...Bf4
- 2.Rd5#
- 1...Be7
- 2.Rg4#
- 1...Se5
- 2.Rf4#
- 1...d5
- 2.Rc4#
- threat
- 1.Ba2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 3
- Sets
- Q(k);N_GUARD::P=Q
- R(a);CHECK,OGATE,P_SPINR(a),XR(F)::QAB1(A),XR(a)
- R(a);S_CUTB(j)::R(B)
- R(i);S_CUTB(j)::R(B)
- B(j);CHECK,N_GUARD::R(B),XB(j)
- B(j);N_GUARD::R(B)
- P(d);CHECK,OGATE,XP(G)::R1(B),XP(d)
- P(h);S_CUTB(j)::R(B)
- Tries
- Try
- B(H);
- Threat
- B(C),XP(f)
- Vars
- R(a);CHECK,OGATE,P_SPINR(a),XR(F)::QAB1(A),XR(a)
- R(a);N_PINR(F),XB(C)::QAB(A)+R(F),DCHECK
- Q(k);N_GUARD::P=Q
- Q(k);N_GUARD::QAB(A)+R(F)
- R(a);S_CUTB(c)::QAB(A)+R(F)
- R(a);N_PINR(F)::QAB(A)+R(F),DCHECK
- R(i);S_CUTB(j)::R(B)
- B(c);N_PINR(F)::QAB(A)+R(F),DCHECK
- B(c);N_GUARD,S_CUTQ(k)::QAB(A)+R(F)
- S(g);P_PINP(G),S_CUTQ(k)::QAB(A)+R(F)
- P(f);SBLOCK::QAB(A)+R(F),DCHECK
- Refutation
- P(d);CHECK,XP(G)
- Try
- B(H);
- Threat
- DUALS(3)
- Vars
- R(a);CHECK,OGATE,P_SPINR(a),XR(F)::QAB1(A),XR(a)
- B(j);CHECK,N_GUARD::R(B),XB(j)
- P(d);CHECK,OGATE,XP(G)::R1(B),XP(d)
- Q(k);N_GUARD,XB(H)::P=Q
- R(a);N_PINR(F),XB(C)::QAB(A)+R(F),DCHECK
- P(h);XB(H)::B(C),XP(f)
- B(c);::B(C),XP(f)
- B(c);N_PINR(F)::QAB(A)+R(F),DCHECK
- Refutation
- P(f);
- Try
- B(H);XP(h)
- Threat
- DUALS(2)
- Vars
- R(a);CHECK,OGATE,P_SPINR(a),XR(F)::QAB1(A),XR(a)
- B(j);CHECK,N_GUARD::R(B),XB(j)
- P(d);CHECK,OGATE,XP(G)::R1(B),XP(d)
- R(a);N_PINR(F),XB(C)::QAB(A)+R(F),DCHECK
- R(i);XB(H)::B(C),XP(f)
- Q(k);N_GUARD::P=Q
- R(a);N_PINR(F)::QAB(A)+R(F),DCHECK
- B(c);::B(C),XP(f)
- B(c);N_PINR(F)::QAB(A)+R(F),DCHECK
- Refutation
- P(f);
- Try
- R(F);CHECK
- Vars
- K(b);P-FLIGHT,XB(H)::QAR1(A)
- Refutation
- B(c);P_SPINB(c)
- Try
- Q(A);CHECK
- Refutation
- B(c);XQ(A)
- Try
- Actual
- B(H);
- Threat
- B(C),XP(f)
- Vars
- R(a);CHECK,OGATE,P_SPINR(a),XR(F)::QAB1(A),XR(a)
- B(j);CHECK,N_GUARD::R(B),XB(j)
- P(d);CHECK,OGATE,XP(G)::R1(B),XP(d)
- R(a);N_PINR(F),XB(C)::QAB(A)+R(F),DCHECK
- Q(k);N_GUARD::P=Q
- Q(k);N_GUARD::QAB(A)+R(F)
- R(a);S_CUTB(c)::QAB(A)+R(F)
- R(a);N_PINR(F)::QAB(A)+R(F),DCHECK
- R(i);S_CUTB(j)::R(B)
- B(c);N_PINR(F)::QAB(A)+R(F),DCHECK
- B(c);N_GUARD,S_CUTQ(k)::QAB(A)+R(F)
- S(g);P_PINP(G),S_CUTQ(k)::QAB(A)+R(F)
- P(f);SBLOCK::QAB(A)+R(F),DCHECK
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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