MESON Chess Problem Database
Problem Display
PID: 3031 (7b/4Q3/b2N4/3N2p1/1P1kPpp1/2pP2n1/2K5/2BR4 w - - 0 1)
Gevers, Raymond
Source?, 1917
#2
9 + 8
| 2681 | All Change Here! | 1919 |
SOLUTION
- SOUND
- Sets
- 1...Bxd3+
- 2.Rxd3#
- 1...Bc4
- 2.dxc4#
- 1...Bb5
- 2.Sxb5#
- 1...Bb7
- 2.Sb5#
- 1...Bc8
- 2.Sb5#
- 1...Be5
- 2.Qa7#
- 1...Bf6
- 2.Qxf6#
- 1...Bg7
- 2.Qxg7#
- 1...Sf1
- 2.Sf5#
- 1...Sh1
- 2.Sf5#
- 1...Se2
- 2.Sf5#
- 1...Sxe4
- 2.Qxe4#
- 1...Sf5
- 2.Sxf5#
- 1...Sh5
- 2.Sf5#
- 1...f3
- 2.Be3#
- 1...Bxd3+
- Tries
- 1.Sxc3?
- 1...Bxd3+
- 2.Rxd3#
- 1...Sxe4
- 2.Sf5#
- 2.Qxe4#
- 1...Bc4
- 2.dxc4#
- 1...Bb5
- 2.Scxb5#
- 2.Sdxb5#
- 1...Bb7
- 2.Scb5#
- 2.Sdb5#
- 1...Bc8
- 2.Scb5#
- 2.Sdb5#
- 1...Be5
- 2.Qa7#
- 1...Bf6
- 2.Qxf6#
- 1...Bg7
- 2.Qxg7#
- 1...Sf1
- 2.Se2#
- 2.Sf5#
- 1...Sh1
- 2.Se2#
- 2.Sf5#
- 1...Se2
- 2.Sxe2#
- 2.Sf5#
- 1...Sf5
- 2.Se2#
- 2.Sxf5#
- 1...Sh5
- 2.Se2#
- 2.Sf5#
- 1...f3!
- 1...Bxd3+
- 1.Sxf4?
- 1...Bxd3+
- 2.Rxd3#
- 1...Sxe4
- 2.Sf5#
- 2.Qxe4#
- 1...Bc4
- 2.dxc4#
- 1...Bb5
- 2.Sxb5#
- 1...Bb7
- 2.Sb5#
- 1...Bc8
- 2.Sb5#
- 1...Be5
- 2.Se6#
- 2.Qa7#
- 1...Bf6
- 2.Qxf6#
- 1...Bg7
- 2.Qxg7#
- 1...Sf1
- 2.Se2#
- 2.Sf5#
- 1...Sh1
- 2.Se2#
- 2.Sf5#
- 1...Se2
- 2.Sxe2#
- 2.Sf5#
- 1...Sf5
- 2.Se2#
- 2.Sxf5#
- 1...Sh5
- 2.Se2#
- 2.Sf5#
- 1...gxf4!
- 1...Bxd3+
- 1.Sc7?
- 1...Bxd3+
- 2.Rxd3#
- 1...Sxe4
- 2.Sf5#
- 2.Qxe4#
- 1...Bc4
- 2.dxc4#
- 1...Bb5
- 2.Sdxb5#
- 2.Scxb5#
- 1...Bb7
- 2.Sdb5#
- 2.Scb5#
- 1...Bc8
- 2.Sdb5#
- 2.Scb5#
- 1...Be5
- 2.Se6#
- 1...Bf6
- 2.Qxf6#
- 1...Bg7
- 2.Qxg7#
- 1...Sf1
- 2.Sf5#
- 1...Sh1
- 2.Sf5#
- 1...Se2
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sh5
- 2.Sf5#
- 1...f3!
- 1...Bxd3+
- 1.Sc4?
- threat
- 2.Qc5#
- 2.Qa7#
- 1...Sxe4
- 2.Qxe4#
- 1...Bb7
- 2.Qc5#
- 1...Bxc4!
- threat
- 1.Sf7?
- threat
- 2.Qc5#
- 2.Qa7#
- 1...Sxe4
- 2.Qxe4#
- 1...Bb7
- 2.Qc5#
- 1...Bxd3+!
- threat
- 1.Bb2?
- threat
- 2.Bxc3#
- 1...Bxd3+
- 2.Rxd3#
- 1...Sxe4
- 2.Qxe4#
- 1...Se2
- 2.Sf5#
- 1...cxb2!
- threat
- 1.Ba3?
- 1...Bxd3+
- 2.Rxd3#
- 1...Sxe4
- 2.Qxe4#
- 1...Bc4
- 2.dxc4#
- 1...Bb5
- 2.Sxb5#
- 1...Bb7
- 2.Sb5#
- 1...Bc8
- 2.Sb5#
- 1...Be5
- 2.Qa7#
- 1...Bf6
- 2.Qxf6#
- 1...Bg7
- 2.Qxg7#
- 1...Sf1
- 2.Sf5#
- 1...Sh1
- 2.Sf5#
- 1...Se2
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sh5
- 2.Sf5#
- 1...f3!
- 1...Bxd3+
- 1.Bxf4?
- threat
- 2.Be3#
- 2.Qa7#
- 1...Bxd3+
- 2.Rxd3#
- 1...Sxe4
- 2.Qxe4#
- 1...Bb7
- 2.Sb5#
- 2.Be3#
- 1...Sf1
- 2.Sf5#
- 2.Qa7#
- 1...Sf5
- 2.Sxf5#
- 2.Qa7#
- 1...gxf4!
- threat
- 1.Sxc3?
- Keys
- 1.Kb3!
- 1...Bc4+
- 2.dxc4#
- 1...Bxd3
- 2.Sb5#
- 1...Sxe4
- 2.Qxe4#
- 1...Bb5
- 2.Sxb5#
- 1...Bb7
- 2.Sb5#
- 1...Bc8
- 2.Sb5#
- 1...Be5
- 2.Qa7#
- 1...Bf6
- 2.Qxf6#
- 1...Bg7
- 2.Qxg7#
- 1...Sf1
- 2.Sf5#
- 1...Sh1
- 2.Sf5#
- 1...Se2
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sh5
- 2.Sf5#
- 1...c2
- 2.Bb2#
- 1...f3
- 2.Be3#
- 1...Bc4+
- 1.Kb3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(g);CHECK,OGATE,P_SPINB(g),XP(D)::R1(B),XB(g)
- B(g);OGATE::R(B)+P(D),XB(g)
- B(g);N_GUARD::S(H),XB(g)
- B(g);N_GUARD::S(H)
- B(h);SBLOCK::QAB(I)
- B(h);N_GUARD::QAB(I),XB(h)
- S(b);N_GUARD::S(H)
- S(b);OGATE,XP(F)::QAR1(I),XS(b)
- S(b);N_GUARD::S(H),XS(b)
- P(d);N_GUARD::B(A)
- Tries
- Try
- S(G);XP(a)
- Vars
- B(g);CHECK,OGATE,P_SPINB(g),XP(D)::R1(B),XB(g)
- B(g);OGATE::R(B)+P(D),XB(g)
- B(h);SBLOCK::QAB(I)
- B(h);N_GUARD::QAB(I),XB(h)
- Refutation
- P(d);
- Try
- S(G);XP(d)
- Vars
- B(g);CHECK,OGATE,P_SPINB(g),XP(D)::R1(B),XB(g)
- B(g);OGATE::R(B)+P(D),XB(g)
- B(g);N_GUARD::S(H),XB(g)
- B(g);N_GUARD::S(H)
- B(h);N_GUARD::QAB(I),XB(h)
- Refutation
- P(f);XS(G)
- Try
- S(G);
- Vars
- B(g);CHECK,OGATE,P_SPINB(g),XP(D)::R1(B),XB(g)
- B(g);OGATE::R(B)+P(D),XB(g)
- B(h);SBLOCK::S(G)
- B(h);N_GUARD::QAB(I),XB(h)
- S(b);N_GUARD::S(H)
- S(b);N_GUARD::S(H),XS(b)
- Refutation
- P(d);
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- S(b);OGATE,XP(F)::QAR1(I),XS(b)
- B(g);::QAB1(I)
- Refutation
- B(g);XS(H)
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- S(b);OGATE,XP(F)::QAR1(I),XS(b)
- B(g);::QAB1(I)
- Refutation
- B(g);CHECK,P_SPINB(g),XP(D)
- Try
- B(A);P_PINP(a)
- Threat
- B(A),XP(a)
- Vars
- B(g);CHECK,OGATE,P_SPINB(g),XP(D)::R1(B),XB(g)
- S(b);OGATE,XP(F)::QAR1(I),XS(b)
- S(b);N_GUARD::S(H)
- Refutation
- P(a);N_SPINP(a),XB(A)
- Try
- B(A);
- Vars
- B(g);CHECK,OGATE,P_SPINB(g),XP(D)::R1(B),XB(g)
- S(b);OGATE,XP(F)::QAR1(I),XS(b)
- B(g);OGATE::R(B)+P(D),XB(g)
- B(g);N_GUARD::S(H),XB(g)
- B(g);N_GUARD::S(H)
- B(h);SBLOCK::QAB(I)
- B(h);N_GUARD::QAB(I),XB(h)
- S(b);N_GUARD::S(H)
- S(b);N_GUARD::S(H),XS(b)
- Refutation
- P(d);
- Try
- B(A);XP(d)
- Threat
- DUALS(2)
- Vars
- B(g);CHECK,OGATE,P_SPINB(g),XP(D)::R1(B),XB(g)
- S(b);OGATE,XP(F)::QAR1(I),XS(b)
- Refutation
- P(f);XB(A)
- Try
- Actual
- K(C);S_FLIGHT
- Vars
- B(g);CHECK,OGATE::R(B)+P(D),XB(g)
- B(g);N_GUARD,P_SPINB(g),XP(D)::S(H)
- S(b);OGATE,XP(F)::QAR1(I),XS(b)
- B(g);N_GUARD::S(H),XB(g)
- B(g);N_GUARD::S(H)
- B(h);SBLOCK::QAB(I)
- B(h);N_GUARD::QAB(I),XB(h)
- S(b);N_GUARD::S(H)
- S(b);N_GUARD::S(H),XS(b)
- P(a);OGATEB::B(A)
- P(d);N_GUARD::B(A)
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