MESON Chess Problem Database
Problem Display
PID: 135542 (2BQ4/B5N1/1r4b1/r2pp3/2P1kp2/4N3/4PP2/b2R3K w - - 0 1)
Hirschenson, Aaron
Retter, Yosef
3rd Prize, StrateGems, 2009
#2
10 + 8
| 145 | StrateGems | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Ra2
- 2.Qxd5#
- 1...Ra3
- 2.Qxd5#
- 1...Ra4
- 2.Qxd5#
- 1...Raa6
- 2.Qxd5#
- 1...Rxa7
- 2.Qxd5#
- 1...Rb1
- 2.f3#
- 1...Rb2
- 2.f3#
- 1...Rb3
- 2.f3#
- 1...Rb4
- 2.f3#
- 1...Rb5
- 2.f3#
- 1...Rba6
- 2.f3#
- 1...Rc6
- 2.f3#
- 1...Rd6
- 2.f3#
- 1...Re6
- 2.f3#
- 1...Rf6
- 2.f3#
- 1...Rb7
- 2.f3#
- 1...Rb8
- 2.f3#
- 1...Bf5
- 2.Bxf5#
- 1...Bh5
- 2.Bf5#
- 1...Bf7
- 2.Bf5#
- 1...Be8
- 2.Bf5#
- 1...fxe3
- 2.Qh4#
- 1...f3
- 2.Qh4#
- 1...Ra2
- Tries
- 1.Sc2?
- threat
- 2.f3#
- 1...f3
- 2.Qh4#
- 1...Ra3
- 2.Qxd5#
- 1...Bh5
- 2.Bf5#
- 1...Rb3!
- threat
- 1.Sg2?
- threat
- 2.f3#
- 1...Ra3
- 2.Qxd5#
- 1...Bh5
- 2.Bf5#
- 1...f3
- 2.Qh4#
- 1...Rb3!
- threat
- 1.Sg4?
- threat
- 2.f3#
- 1...Ra3
- 2.Qxd5#
- 1...Rb3
- 2.Sf6#
- 1...f3!
- threat
- 1.Sxd5?
- threat
- 2.f3#
- 1...Rxd5
- 2.Qxd5#
- 1...Rb3
- 2.Sf6#
- 1...Bh5
- 2.Bf5#
- 1...f3
- 2.Qh4#
- 1...Ra3!
- threat
- 1.Sef5?
- threat
- 2.f3#
- 1...Bxf5
- 2.Bxf5#
- 1...f3
- 2.Qh4#
- 1...Ra3
- 2.Qxd5#
- 1...Rb3
- 2.Sd6#
- 1...Bh5!
- threat
- 1.Sgf5?
- threat
- 2.f3#
- 1...Bxf5
- 2.Bxf5#
- 1...fxe3
- 2.Qh4#
- 1...f3
- 2.Qh4#
- 1...Bh5!
- threat
- 1.Se6?
- threat
- 2.Sg5#
- 1...Rxe6
- 2.f3#
- 1...f3
- 2.Qh4#
- 1...fxe3!
- threat
- 1.Rd3?
- threat
- 2.f3#
- 1...fxe3
- 2.Qh4#
- 1...f3
- 2.Qh4#
- 1...Bh5
- 2.Bf5#
- 1...Rb1+!
- threat
- 1.Qxb6?
- threat
- 2.Qb1#
- 2.Qxg6#
- 2.f3#
- 1...fxe3
- 2.Qxe3#
- 1...Rb5
- 2.Qxg6#
- 2.f3#
- 1...Ra2
- 2.Qxg6#
- 2.f3#
- 1...Ra3
- 2.Qxg6#
- 2.f3#
- 1...Rc5
- 2.Qb1#
- 2.Qxg6#
- 1...Ra6
- 2.Qb1#
- 2.f3#
- 1...Bb2
- 2.Qxg6#
- 2.f3#
- 1...Bd4
- 2.Qb1#
- 2.Qxg6#
- 1...Bf5
- 2.Bxf5#
- 2.Qb1#
- 2.f3#
- 1...Bh5
- 2.Bf5#
- 2.Qb1#
- 1...Bf7
- 2.Bf5#
- 2.Qb1#
- 2.f3#
- 1...Bh7
- 2.Qb1#
- 2.f3#
- 1...Be8
- 2.Bf5#
- 2.Qb1#
- 2.f3#
- 1...d4
- 2.Qxg6#
- 1...f3!
- threat
- 1.Sc2?
- Keys
- 1.Sf1!
- threat
- 2.f3#
- 1...f3
- 2.Qh4#
- 1...Ra3
- 2.Qxd5#
- 1...Rb3
- 2.Sd2#
- 1...Bh5
- 2.Bf5#
- threat
- 1.Sf1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 19
- Sets
- R(d);N_GUARD::QAB1(J),XP(e)
- R(d);N_GUARD,XB(G)::QAB1(J),XP(e)
- R(g);P_PINR(A)::P(D)
- R(g);::P(D)
- B(h);N_GUARD::B(I),XB(h)
- B(h);N_GUARD::B(I)
- P(c);OGATEB,XS(E)::QAR(J)
- P(c);OGATEB::QAR(J)
- Tries
- Try
- S(E);
- Threat
- P(D)
- Vars
- P(c);OGATEB::QAR(J)
- R(d);N_GUARD::QAB1(J),XP(e)
- B(h);N_GUARD::B(I)
- Refutation
- R(g);
- Try
- S(E);
- Threat
- P(D)
- Vars
- R(d);N_GUARD::QAB1(J),XP(e)
- B(h);N_GUARD::B(I)
- P(c);OGATEB::QAR(J)
- Refutation
- R(g);
- Try
- S(E);
- Threat
- P(D)
- Vars
- R(d);N_GUARD::QAB1(J),XP(e)
- R(g);N_GUARD::S(E)
- Refutation
- P(c);
- Try
- S(E);XP(e)
- Threat
- P(D)
- Vars
- R(d);OGATE,XS(E)::QAB1(J),XR(d)
- R(g);N_GUARD::S(E)
- B(h);N_GUARD::B(I)
- P(c);OGATEB::QAR(J)
- Refutation
- R(d);
- Try
- S(E);
- Threat
- P(D)
- Vars
- B(h);OGATE,XS(E)::B(I),XB(h)
- P(c);OGATEB::QAR(J)
- R(d);N_GUARD::QAB1(J),XP(e)
- R(g);N_GUARD::S(E)
- Refutation
- B(h);
- Try
- S(H);
- Threat
- P(D)
- Vars
- B(h);OGATE,XS(H)::B(I),XB(h)
- P(c);OGATEB,XS(E)::QAR(J)
- P(c);OGATEB::QAR(J)
- Refutation
- B(h);
- Try
- S(H);
- Threat
- S(H)
- Vars
- R(g);XS(H)::P(D)
- P(c);OGATEB::QAR(J)
- Refutation
- P(c);XS(E)
- Try
- R(A);
- Threat
- P(D)
- Vars
- P(c);OGATEB,XS(E)::QAR(J)
- P(c);OGATEB::QAR(J)
- B(h);N_GUARD::B(I)
- Refutation
- R(g);CHECK
- Try
- Q(J);XR(g)
- Threat
- DUALS(3)
- Vars
- P(c);OGATE,XS(E)::QAR1(J),XP(c)
- P(e);::QAB(J),XB(h)
- Refutation
- P(c);
- Try
- Actual
- S(E);
- Threat
- P(D)
- Vars
- P(c);OGATEB::QAR(J)
- R(d);N_GUARD::QAB1(J),XP(e)
- R(g);::S(E)
- B(h);N_GUARD::B(I)
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