MESON Chess Problem Database
Problem Display
PID: 51157 (2rnQbnq/2Np3r/RB1k4/4N3/1P3P2/1p1b4/3K2B1/3R4 w - - 0 1)
Lertoria, Ernest
Manchester Guardian, 1951
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Qxe5
- 2.Qxe5#
- 2.fxe5#
- 1...Rh1
- 2.Qxd7#
- 1...Rh2
- 2.Qxd7#
- 1...Rh3
- 2.Qxd7#
- 1...Rh4
- 2.Qxd7#
- 1...Rh5
- 2.Qxd7#
- 1...Rh6
- 2.Qxd7#
- 1...Rxc7
- 2.Bc5#
- 1...Bb1
- 2.Sc4#
- 2.Sb5#
- 1...Bc2
- 2.Sc4#
- 2.Sb5#
- 1...Be2
- 2.Kxe2#
- 1...Bc4
- 2.Sxc4#
- 1...Bb5
- 2.Sxb5#
- 1...Bf5
- 2.Sc4#
- 2.Sb5#
- 1...Bg6
- 2.Sc4#
- 2.Sb5#
- 1...Be7
- 2.Qxd7#
- 1...Bg7
- 2.Qxd7#
- 1...Sf7
- 2.Qxd7#
- 1...Se7
- 2.Qxd7#
- 1...Qxe5
- Tries
- 1.Kc1?
- threat
- 2.Sc4#
- 2.Rxd3#
- 1...Rxc7+
- 2.Bc5#
- 1...Qxe5
- 2.Qxe5#
- 2.fxe5#
- 1...Rh1
- 2.Sc4#
- 2.Qxd7#
- 1...Rh3
- 2.Sc4#
- 2.Qxd7#
- 1...Sc6
- 2.Sc4#
- 2.Sb5#
- 1...Se6
- 2.Sc4#
- 2.Ba5#
- 1...Sf6
- 2.Sc4#
- 1...Se7
- 2.Sc4#
- 2.Qxd7#
- 1...b2+!
- threat
- 1.Ke1?
- threat
- 2.Sc4#
- 2.Sb5#
- 2.Rxd3#
- 1...Qxe5+
- 2.Qxe5#
- 2.fxe5#
- 1...Rxc7
- 2.Bc5#
- 2.Rxd3#
- 1...Rh3
- 2.Sc4#
- 2.Sb5#
- 2.Qxd7#
- 1...Re7
- 2.Rxd3#
- 1...Be7
- 2.Sc4#
- 2.Rxd3#
- 2.Qxd7#
- 1...Sc6
- 2.Sc4#
- 2.Sb5#
- 1...Se6
- 2.Sc4#
- 2.Sb5#
- 2.Ba5#
- 1...Sf6
- 2.Sc4#
- 2.Sb5#
- 1...Se7
- 2.Sc4#
- 2.Qxd7#
- 1...Rh1+!
- threat
- 1.Kxd3?
- threat
- 2.Ke2#
- 2.Kc3#
- 2.Ke3#
- 2.Kc4#
- 2.Ke4#
- 2.Sc4#
- 2.Sb5#
- 1...Qxe5
- 2.Qxe5#
- 2.fxe5#
- 1...Rxc7
- 2.Ke2#
- 2.Ke3#
- 2.Ke4#
- 2.Bc5#
- 1...Rh1
- 2.Sc4#
- 2.Sb5#
- 2.Qxd7#
- 1...Re7
- 2.Ke2#
- 2.Kc3#
- 2.Ke3#
- 2.Kc4#
- 2.Ke4#
- 2.Sc4#
- 1...Be7
- 2.Ke2#
- 2.Kc3#
- 2.Ke3#
- 2.Kc4#
- 2.Ke4#
- 2.Sc4#
- 2.Qxd7#
- 1...Sc6
- 2.Sc4#
- 2.Sb5#
- 1...Se6
- 2.Sc4#
- 2.Sb5#
- 2.Ba5#
- 1...Sf6
- 2.Sc4#
- 2.Sb5#
- 1...Se7
- 2.Sc4#
- 2.Qxd7#
- 1...Rh3+!
- threat
- 1.Ke3?
- threat
- 2.Sc4#
- 2.Sb5#
- 2.Rxd3#
- 1...Qxe5+
- 2.Qxe5#
- 2.fxe5#
- 1...Rxc7
- 2.Bc5#
- 2.Rxd3#
- 1...Re7
- 2.Rxd3#
- 1...Be7
- 2.Sc4#
- 2.Rxd3#
- 2.Qxd7#
- 1...Sc6
- 2.Sc4#
- 2.Sb5#
- 1...Se6
- 2.Sc4#
- 2.Sb5#
- 2.Ba5#
- 1...Sf6
- 2.Sc4#
- 2.Sb5#
- 1...Se7
- 2.Sc4#
- 2.Qxd7#
- 1...Rh3+!
- threat
- 1.Kc1?
- Keys
- 1.Kc3!
- threat
- 2.Rxd3#
- 1...Qxe5+
- 2.Qxe5#
- 2.fxe5#
- 1...Rxc7+
- 2.Bc5#
- 1...Rh3
- 2.Qxd7#
- 1...Sc6
- 2.Sb5#
- 1...Se6
- 2.Ba5#
- 1...Sf6
- 2.Sc4#
- 1...Se7
- 2.Qxd7#
- threat
- 1.Kc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 11
- Sets
- R(e);N_GUARD::QAR1(J),XP(d)
- R(e);N_GUARD,P_PINB(C)::QAR1(J),XP(d)
- R(f);SBLOCK,XS(I)::R(G)+B(H),DCHECK
- B(b);::R(A)+K(B),XB(b)
- B(b);N_GUARD::S(F),XB(b)
- B(b);N_GUARD::S(I),XB(b)
- B(h);S_CUTR(e)::QAR1(J),XP(d)
- S(g);S_CUTR(e)::QAR1(J),XP(d)
- S(i);S_CUTR(e)::QAR1(J),XP(d)
- Tries
- Try
- K(B);P_PINB(b),P_SPINS(I),S_FLIGHT
- Threat
- DUALS(2)
- Vars
- R(f);CHECK,SBLOCK,XS(I)::R(G)+B(H),DCHECK
- S(i);::S(F)
- Refutation
- P(a);CHECK
- Try
- K(B);P_PINB(b),S_FLIGHT
- Threat
- DUALS(3)
- Vars
- R(e);P_PINS(F)::R(A),XB(b)
- Refutation
- R(e);CHECK
- Try
- K(B);P-FLIGHT,XB(b)
- Threat
- DUALS(7)
- Refutation
- R(e);CHECK
- Try
- K(B);P_PINB(b),S_FLIGHT
- Threat
- DUALS(3)
- Vars
- R(e);P_PINS(F)::R(A),XB(b)
- Refutation
- R(e);CHECK
- Try
- Actual
- K(B);P_PINB(b),P_SPINS(F),S_FLIGHT
- Threat
- R(A),XB(b)
- Vars
- R(f);CHECK,SBLOCK,XS(I)::R(G)+B(H),DCHECK
- R(e);N_GUARD::QAR1(J),XP(d)
- S(g);::S(I)
- S(g);N_GUARD::R(G)+B(H)
- S(i);N_PINS(F),P_PINS(I)::S(F)
- S(i);S_CUTR(e)::QAR1(J),XP(d)
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