MESON Chess Problem Database
Problem Display
PID: 168348 (8/2pKR1n1/5p2/1p1Q1p2/2p1NkBP/1rp5/2Pr2R1/b1B2Nn1 w - - 0 1)
Petite, Efren
Best Problems, 2006
#2
10 + 12
| 5454 | Near Snap | 2018 |
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...fxe4
- 2.Rxe4#
- 1...c5
- 2.Qd6#
- 1...c6
- 2.Qd6#
- 1...fxe4
- Tries
- 1.Sexd2?
- threat
- 2.Sb1#
- 2.Sxb3#
- 2.Sf3#
- 2.Sxc4#
- 2.Se4#
- 2.Qd4#
- 1...fxg4
- 2.Sb1#
- 2.Sxb3#
- 2.Sf3#
- 2.Sxc4#
- 2.Re4#
- 2.Qe4#
- 1...Rb1
- 2.Sxb1#
- 2.Qd4#
- 1...Rb2
- 2.Sb1#
- 2.Sb3#
- 2.Sf3#
- 2.Sxc4#
- 2.Se4#
- 2.Qd4#
- 1...Ra3
- 2.Sb1#
- 2.Sb3#
- 2.Sf3#
- 2.Sxc4#
- 2.Se4#
- 2.Qd4#
- 1...Rb4
- 2.Sb1#
- 2.Sb3#
- 2.Sf3#
- 2.Sxc4#
- 2.Se4#
- 2.Qd4#
- 1...Bb2
- 2.Qd4#
- 1...Se2
- 2.Qf3#
- 1...Sf3
- 2.Sxf3#
- 2.Qxf3#
- 1...Se6
- 2.Sb1#
- 2.Sxb3#
- 2.Sf3#
- 2.Sxc4#
- 2.Se4#
- 2.Qxf5#
- 1...c5
- 2.Sb1#
- 2.Sxb3#
- 2.Sf3#
- 2.Sxc4#
- 2.Se4#
- 2.Qd6#
- 1...cxd2!
- threat
- 1.Sf2?
- threat
- 2.Qd4#
- 1...fxg4
- 2.Rxg4#
- 1...Se2
- 2.Sh3#
- 1...Sf3
- 2.Sh3#
- 1...c5
- 2.Qd6#
- 1...Se6!
- threat
- 1.Sxc3?
- threat
- 2.Bxd2#
- 2.Qxd2#
- 2.Qd4#
- 1...Rxc3
- 2.Qd4#
- 1...fxg4
- 2.Bxd2#
- 1...Se2
- 2.Sxe2#
- 2.Bxd2#
- 2.Qxd2#
- 1...Sf3
- 2.Se2#
- 1...Se6
- 2.Bxd2#
- 1...c5
- 2.Bxd2#
- 2.Qxd2#
- 2.Qd6#
- 1...Bxc3!
- threat
- 1.Sd6?
- threat
- 2.Qd4#
- 1...fxg4
- 2.Qe4#
- 1...Se2
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Se6
- 2.Qxf5#
- 1...c5!
- threat
- 1.Sxf6?
- threat
- 2.Qd4#
- 1...fxg4
- 2.Rxg4#
- 1...Se2
- 2.Rf2#
- 1...Se6
- 2.Sh5#
- 1...c5
- 2.Qd6#
- 1...Sf3!
- threat
- 1.Sexd2?
- Keys
- 1.Sg5!
- threat
- 2.Qd4#
- 1...fxg4
- 2.Re4#
- 1...Se2
- 2.Sh3#
- 1...Sf3
- 2.Sh3#
- 1...Se6
- 2.Sxe6#
- 1...c5
- 2.Qd6#
- threat
- 1.Sg5!
Anticipated by 9877(1960-1961)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 2
- Sets
- P(i);OGATE,XS(E)::R1(J),XP(i)
- P(k);N_GUARD::QAB(H)
- Tries
- Try
- S(E);N_SPINQ(H),XR(c)
- Threat
- DUALS(6)
- Vars
- B(a);::QAR2(H)
- S(b);N_GUARD::QAR1(H)
- Refutation
- P(e);P_SPINP(e),XS(E)
- Try
- S(E);
- Threat
- QAR2(H)
- Vars
- P(i);OGATE,XB(F)::R1(D),XP(i)
- S(b);N_GUARD::S(E)
- P(k);N_GUARD::QAB(H)
- Refutation
- S(l);
- Try
- S(E);XP(e)
- Threat
- DUALS(3)
- Vars
- R(d);XS(E)::QAR2(H)
- P(i);XB(F)::B(A),XR(c)
- S(b);N_GUARD::S(E)
- S(l);::B(A),XR(c)
- Refutation
- B(a);XS(E)
- Try
- S(E);N_SPINQ(H)
- Threat
- QAR2(H)
- Vars
- P(i);N_GUARD,XB(F)::QAR1(H)
- S(b);N_GUARD::QAR1(H)
- S(b);N_GUARD::QAR1(H),XS(b)
- S(l);N_GUARD::QAR1(H),XP(i)
- Refutation
- P(k);
- Try
- S(E);XP(j)
- Threat
- QAR2(H)
- Vars
- P(i);OGATE,XB(F)::R1(D),XP(i)
- S(b);N_GUARD::R(D)
- S(l);N_GUARD::S(E)
- P(k);N_GUARD::QAB(H)
- Refutation
- S(b);
- Try
- Actual
- S(E);
- Threat
- QAR2(H)
- Vars
- P(i);N_GUARD,XB(F)::R1(J)
- S(b);N_GUARD::S(E)
- S(l);N_GUARD::S(E),XS(l)
- P(k);N_GUARD::QAB(H)
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