MESON Chess Problem Database
Problem Display
PID: 230228 (3rR1q1/1Np5/Q3nNnb/7R/1Prk1B2/3pp3/3P4/KB1b4 w - - 0 1)
Petite, Efren
US Problem Bulletin, 1988
#2
10 + 11
SOLUTION
- SOUND
- Sets
- 1...Rc1
- 2.Qxd3#
- 1...Rc3
- 2.dxe3#
- 1...Rxb4
- 2.Qxd3#
- 1...Rc5
- 2.Qxd3#
- 1...Rc6
- 2.Qxd3#
- 1...Rd5
- 2.Rxd5#
- 1...Ra8
- 2.Rd5#
- 1...Rb8
- 2.Rd5#
- 1...Rc8
- 2.Rd5#
- 1...Rxe8
- 2.Rd5#
- 1...Bg7
- 2.Bxe3#
- 1...Bf8
- 2.Bxe3#
- 1...Sexf4
- 2.Re4#
- 1...Sg5
- 2.Bxe3#
- 1...Sg7
- 2.Re4#
- 1...Sef8
- 2.Re4#
- 1...Sh4
- 2.Be5#
- 1...Se5
- 2.Bxe5#
- 1...Se7
- 2.Be5#
- 1...Sgf8
- 2.Be5#
- 1...Sh8
- 2.Be5#
- 1...Rc1
- Tries
- 1.Sd6?
- threat
- 2.Sb5#
- 2.Sf5#
- 2.Rd5#
- 2.Qxc4#
- 1...Qxe8
- 2.Sf5#
- 2.Rd5#
- 2.Qxc4#
- 1...Rxb4
- 2.Rd5#
- 2.Qxd3#
- 1...Bxh5
- 2.Sb5#
- 2.Sf5#
- 2.Qxc4#
- 1...Bxf4
- 2.Sb5#
- 2.Rd5#
- 2.Qxc4#
- 1...Sexf4
- 2.Sb5#
- 2.Sf5#
- 2.Re4#
- 1...Sgxf4
- 2.Sb5#
- 2.Qxc4#
- 1...exd2
- 2.Sb5#
- 2.Qxc4#
- 1...cxd6
- 2.Rd5#
- 1...Rc1
- 2.Sf5#
- 2.Rd5#
- 2.Qxd3#
- 1...Rc2
- 2.Sf5#
- 2.Rd5#
- 1...Rc3
- 2.Sf5#
- 2.Rd5#
- 2.dxe3#
- 1...Rc5
- 2.Qxd3#
- 1...Rc6
- 2.Sf5#
- 2.Rd5#
- 2.Qxd3#
- 1...Ra8
- 2.Sb5#
- 2.Sf5#
- 2.Rd5#
- 1...Rb8
- 2.Sf5#
- 2.Rd5#
- 2.Qxc4#
- 1...Bb3
- 2.Sb5#
- 2.Sf5#
- 2.Rd5#
- 1...Bf3
- 2.Sb5#
- 2.Sf5#
- 2.Qxc4#
- 1...Ba4
- 2.Sf5#
- 2.Rd5#
- 2.Qxc4#
- 1...Bg4
- 2.Sb5#
- 2.Rd5#
- 2.Qxc4#
- 1...Bg5
- 2.Sb5#
- 2.Sf5#
- 2.Qxc4#
- 1...Sc5
- 2.Sb5#
- 2.Sf5#
- 1...Sg5
- 2.Sb5#
- 2.Sf5#
- 2.Bxe3#
- 1...Sg7
- 2.Sb5#
- 2.Re4#
- 1...Sef8
- 2.Sb5#
- 2.Sf5#
- 2.Re4#
- 1...Sh4
- 2.Sb5#
- 2.Be5#
- 2.Rd5#
- 2.Qxc4#
- 1...Se5
- 2.Sb5#
- 2.Sf5#
- 2.Bxe5#
- 1...Se7
- 2.Sb5#
- 2.Be5#
- 2.Qxc4#
- 1...c6
- 2.Sf5#
- 2.Qxc4#
- 1...Rxd6!
- threat
- 1.Qd6+?
- 1...cxd6
- 2.Rd5#
- 1...Rxd6!
- 1...cxd6
- 1.Sd6?
- Keys
- 1.Sa5!
- threat
- 2.Qxc4#
- 1...Rxb4
- 2.Sc6#
- 2.Qxd3#
- 1...Sexf4
- 2.Re4#
- 1...Rc1
- 2.Qxd3#
- 1...Rc2
- 2.Sb3#
- 1...Rc3
- 2.dxe3#
- 1...Rc5
- 2.Qxd3#
- 1...Rc6
- 2.Sxc6#
- 2.Qxd3#
- 1...Bb3
- 2.Sxb3#
- 1...Sc5
- 2.Sc6#
- 1...Sg5
- 2.Bxe3#
- 1...Sg7
- 2.Re4#
- 1...Sef8
- 2.Re4#
- 1...Se5
- 2.Bxe5#
- threat
- 1.Sa5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 13
- Sets
- R(d);OGATE,P_PINB(B)::QAR1(G),XP(b)
- R(d);SBLOCK::P(C),XP(c)
- R(d);OGATE,XP(D)::QAR1(G),XP(b)
- R(d);OGATE::QAR1(G),XP(b)
- R(j);N_GUARD::R1(F),XR(j)
- R(j);N_GUARD,P_PINQ(G)::R1(F)
- R(j);N_GUARD::R1(F)
- R(j);N_GUARD,XR(J)::R1(F)
- B(h);N_GUARD::B(E),XP(c)
- S(f);OGATE,XB(E)::R1(J)
- S(f);S_CUTB(h)::B(E),XP(c)
- S(f);OGATE::R1(J)
- S(g);N_GUARD::B(E)
- S(g);N_GUARD::B(E),XS(g)
- Tries
- Try
- S(I);
- Threat
- DUALS(4)
- Vars
- P(i);XS(I)::R1(F)
- R(d);OGATE::QAR1(G),XP(b)
- Refutation
- R(j);XS(I)
- Try
- Q(G);CHECK
- Vars
- P(i);XQ(G)::R1(F)
- Refutation
- R(j);XQ(G)
- Try
- Actual
- S(I);
- Threat
- QAR1(G),XR(d)
- Vars
- S(f);OGATE,XB(E)::R1(J)
- R(d);OGATE,P_PINB(B)::QAR1(G),XP(b)
- R(d);S_CUTB(a)::S(I)
- R(d);SBLOCK::P(C),XP(c)
- R(d);OGATE::QAR1(G),XP(b)
- B(a);N_GUARD::S(I),XB(a)
- S(f);S_CUTR(d)::S(I)
- S(f);S_CUTB(h)::B(E),XP(c)
- S(f);OGATE::R1(J)
- S(g);N_GUARD::B(E),XS(g)
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