MESON Chess Problem Database
Problem Display
PID: 149712 (1BB4n/4ppK1/1R2N1p1/2N2k2/1p1R2pP/2b4P/1pq1b3/1Q1r2n1 w - - 0 1)
Umnov, Evgeny Ivanovich
1st Prize, Hamburger Volkszeitung, 1929
#2
10 + 13
| 35 | L'Italia Scacchistica | 1930 |
| 133 | The Problemist Supplement | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Qe4
- 2.Qxe4#
- 1...Rxd4
- 2.Sxd4#
- 1...Bf1
- 2.hxg4#
- 1...Bd3
- 2.hxg4#
- 1...Bc4
- 2.hxg4#
- 1...Bb5
- 2.hxg4#
- 1...Ba6
- 2.hxg4#
- 1...Be1
- 2.Rf4#
- 1...Bd2
- 2.Rd5#
- 1...Bxd4+
- 2.Sxd4#
- 1...Sf3
- 2.hxg4#
- 1...fxe6
- 2.Bxe6#
- 1...f6
- 2.Rf4#
- 1...Qe4
- Tries
- 1.Kh7?
- threat
- 2.Sg7#
- 2.Rf4#
- 1...Rxd4
- 2.Sxd4#
- 2.Sg7#
- 1...Bxd4
- 2.Sxd4#
- 2.Sg7#
- 1...Sxh3
- 2.Sg7#
- 1...fxe6
- 2.Rf4#
- 1...Qe4
- 2.Sg7#
- 1...Rf1
- 2.Sg7#
- 1...Bd2
- 2.Sg7#
- 1...g5
- 2.Sg7#
- 1...Kf6!
- threat
- 1.Kf8?
- threat
- 2.Sg7#
- 2.Rf4#
- 1...Rxd4
- 2.Sxd4#
- 2.Sg7#
- 1...Bxd4
- 2.Sxd4#
- 2.Sg7#
- 1...Sxh3
- 2.Sg7#
- 1...fxe6
- 2.Rf4#
- 1...g5
- 2.Sg7#
- 1...Qe4
- 2.Sg7#
- 1...Rf1
- 2.Sg7#
- 1...Bd2
- 2.Sg7#
- 1...Kf6!
- threat
- 1.Kg8?
- threat
- 2.Sg7#
- 2.Rf4#
- 1...Rxd4
- 2.Sxd4#
- 2.Sg7#
- 1...Bxd4
- 2.Sxd4#
- 2.Sg7#
- 1...Sxh3
- 2.Sg7#
- 1...fxe6
- 2.Rf4#
- 1...g5
- 2.Sg7#
- 1...Qe4
- 2.Sg7#
- 1...Rf1
- 2.Sg7#
- 1...Bd2
- 2.Sg7#
- 1...Kf6!
- threat
- 1.Sc7+?
- 1...Ke5
- 2.Sb5#
- 1...e6!
- 1...Ke5
- 1.Qxc2+?
- 1...Bd3
- 2.hxg4#
- 1...Rd3!
- 1...Bd3
- 1.Kh7?
- Keys
- 1.Rb5!
- threat
- 2.Sd3#
- 1...Bxd4+
- 2.Sxd4#
- 1...Rxd4
- 2.Sxd4#
- 1...Bxb5
- 2.hxg4#
- 1...Qd3
- 2.Sb3#
- 2.Sxd3#
- 2.Sa4#
- 2.Sa6#
- 2.Sb7#
- 1...Qe4
- 2.Qxe4#
- 1...Rd3
- 2.Sb3#
- 2.Sxd3#
- 2.Sa4#
- 2.Se4#
- 2.Sa6#
- 2.Sb7#
- 1...Bd3
- 2.Sxd3#
- 2.hxg4#
- 1...Bf3
- 2.Se4#
- 1...Bc4
- 2.hxg4#
- 1...Be1
- 2.Rf4#
- 1...Bd2
- 2.Rd5#
- 1...Sf3
- 2.hxg4#
- threat
- 1.Rb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 5
- Sets
- Q(d);OGATE::QAB1(A),XQ(d)
- R(a);XR(C)::B(J)+S(G),DCHECK,XR(a)
- B(e);N_GUARD::P(B),XP(h)
- B(e);N_GUARD,N_SPINQ(d)::P(B),XP(h)
- B(f);N_PINR(C)::R1(C)
- B(f);N_PINR(C)::R(C)
- B(f);CHECK,XR(C)::B(J)+S(G),DCHECK,XB(f)
- S(b);S_CUTB(e)::P(B),XP(h)
- P(l);OGATE,P_SPINP(l),XS(G)::B(J),XP(l)
- P(l);N_PINR(C)::R1(C)
- Tries
- Try
- K(H);N_SPINR(C),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- S(b);XP(B)::B(J)+S(G),DCHECK
- P(l);P_SPINP(l),XS(G)::R1(C)
- Q(d);::B(J)+S(G),DCHECK
- R(a);::B(J)+S(G),DCHECK
- B(f);::B(J)+S(G),DCHECK
- P(j);::B(J)+S(G),DCHECK
- Refutation
- K(i);N_SPINQ(d),P-FLIGHT
- Try
- K(H);N_SPINR(C),S_FLIGHT
- Threat
- DUALS(2)
- Vars
- S(b);XP(B)::B(J)+S(G),DCHECK
- P(l);P_SPINP(l),XS(G)::R1(C)
- P(j);::B(J)+S(G),DCHECK
- Q(d);::B(J)+S(G),DCHECK
- R(a);::B(J)+S(G),DCHECK
- B(f);::B(J)+S(G),DCHECK
- Refutation
- K(i);N_SPINQ(d),P-FLIGHT
- Try
- K(H);N_SPINR(C),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- S(b);XP(B)::B(J)+S(G),DCHECK
- P(l);P_SPINP(l),XS(G)::R1(C)
- P(j);::B(J)+S(G),DCHECK
- Q(d);::B(J)+S(G),DCHECK
- R(a);::B(J)+S(G),DCHECK
- B(f);::B(J)+S(G),DCHECK
- Refutation
- K(i);N_SPINQ(d),P-FLIGHT
- Try
- S(G);CHECK
- Vars
- K(i);N_PINR(C),N_SPINQ(d),P-FLIGHT::B(I)+S(G)
- Refutation
- P(k);P_SPINP(k)
- Try
- Q(A);CHECK,XQ(d)
- Vars
- B(e);P_SPINB(e)::P(B),XP(h)
- Refutation
- R(a);P_SPINR(a)
- Try
- Actual
- R(F);
- Threat
- R(F)+S(E)
- Vars
- B(f);CHECK,XR(C)::B(J)+S(G),DCHECK,XB(f)
- R(a);XR(C)::B(J)+S(G),DCHECK,XR(a)
- B(e);N_GUARD,XR(F)::P(B),XP(h)
- Q(d);OGATE::QAB1(A),XQ(d)
- B(e);N_GUARD::R(F)+S(E)
- B(e);N_GUARD::P(B),XP(h)
- B(f);N_PINR(C)::R1(C)
- B(f);N_PINR(C)::R(C)
- S(b);S_CUTB(e)::P(B),XP(h)
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).