MESON Chess Problem Database

Problem Display
PID: 30762 (6Q1/2n5/1p1p4/bP3P1P/bp1Pk3/4p3/1pP1N1P1/1B1K4 w - - 0 1)

Maximov, Nikolai J

1st Prize, Leisure Hour, 1902

6Q1/2n5/1p1p4/bP3P1P/bp1Pk3/4p3/1pP1N1P1/1B1K4

#2

10 + 9

16 Chess Amateur (The) 1910
2638 White to Play 1913
2681 All Change Here! 1919

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf5
      • 2.Qg6#
    • 1...Bxc2+
      • 2.Bxc2#
    • 1...Bb3
      • 2.cxb3#
    • 1...Bxb5
      • 2.c4#
    • 1...Sxb5
      • 2.Qe6#
    • 1...Sd5
      • 2.Qe6#
    • 1...Sa6
      • 2.Qe6#
    • 1...Se6
      • 2.Qxe6#
    • 1...Sa8
      • 2.Qe6#
    • 1...Se8
      • 2.Qe6#
    • 1...b3
      • 2.cxb3#
      • 2.c3#
      • 2.c4#
    • 1...d5
      • 2.Qg4#
  • Tries
    • 1.Qc4?
      • 1...Bxc2+
        • 2.Bxc2#
      • 1...Bxb5
        • 2.c3#
      • 1...Sxb5
        • 2.Qe6#
      • 1...Bb3
        • 2.cxb3#
      • 1...Sd5
        • 2.Qd3#
      • 1...Sa6
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sa8
        • 2.Qe6#
      • 1...Se8
        • 2.Qe6#
      • 1...b3
        • 2.cxb3#
        • 2.c3#
      • 1...d5
        • 2.Qd3#
      • 1...Kxf5!
    • 1.Qf7?
      • 1...Bxc2+
        • 2.Bxc2#
      • 1...Bxb5
        • 2.c4#
      • 1...Sxb5
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...Bb3
        • 2.cxb3#
      • 1...Sd5
        • 2.Qe6#
      • 1...Sa6
        • 2.Qe6#
      • 1...Sa8
        • 2.Qe6#
      • 1...Se8
        • 2.Qe6#
      • 1...b3
        • 2.cxb3#
        • 2.c3#
        • 2.c4#
      • 1...d5!
    • 1.Qe8+?
      • 1...Kd5
        • 2.Qc6#
      • 1...Kxf5
        • 2.Qg6#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sxe8!
    • 1.f6?
      • 1...Bxc2+
        • 2.Bxc2#
      • 1...Bxb5
        • 2.c4#
      • 1...Sxb5
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...Bb3
        • 2.cxb3#
      • 1...Sd5
        • 2.Qe6#
        • 2.Qh7#
        • 2.Qg6#
      • 1...Sa6
        • 2.Qe6#
      • 1...Sa8
        • 2.Qe6#
      • 1...Se8
        • 2.Qe6#
      • 1...b3
        • 2.cxb3#
        • 2.c3#
        • 2.c4#
      • 1...d5
        • 2.Qh7#
        • 2.Qg4#
        • 2.Qg6#
      • 1...Kf5!
    • 1.h6?
      • 1...Bxc2+
        • 2.Bxc2#
      • 1...Bxb5
        • 2.c4#
      • 1...Sxb5
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...Bb3
        • 2.cxb3#
      • 1...Sd5
        • 2.Qe6#
      • 1...Sa6
        • 2.Qe6#
      • 1...Sa8
        • 2.Qe6#
      • 1...Se8
        • 2.Qe6#
      • 1...b3
        • 2.cxb3#
        • 2.c3#
        • 2.c4#
      • 1...d5
        • 2.Qg4#
      • 1...Kxf5!
  • Keys
    • 1.Ke1!
      • 1...b3+
        • 2.c3#
      • 1...Kxf5
        • 2.Qg6#
      • 1...Bxc2
        • 2.Bxc2#
      • 1...Bxb5
        • 2.c4#
      • 1...Sxb5
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...Bb3
        • 2.cxb3#
      • 1...Sd5
        • 2.Qe6#
      • 1...Sa6
        • 2.Qe6#
      • 1...Sa8
        • 2.Qe6#
      • 1...Se8
        • 2.Qe6#
      • 1...d5
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(e);OGATEB,S_FLIGHT,XP(H)::QAB1(J)
    • B(c);CHECK,OGATE,P_SPINB(c),XP(C)::B(A),XB(c)
    • B(c);::B(A)+P(C),XB(c)
    • B(c);N_PINP(C),XP(G)::B(A)+P(C)
    • S(i);N_GUARD,XP(G)::QAR2(J)
    • S(i);N_GUARD::QAR2(J)
    • S(i);N_GUARD::QAR2(J),XS(i)
    • P(h);SBLOCK::QAR2(J)
  • Tries
    • Try
      • Q(J);
      • Vars
        • B(c);CHECK,OGATE,P_SPINB(c),XP(C)::B(A),XB(c)
        • B(c);N_PINP(C),XP(G)::B(A)+P(C)
        • S(i);N_GUARD,XP(G)::QAR2(J)
        • B(c);::B(A)+P(C),XB(c)
        • S(i);SBLOCK::QAB1(J)
        • S(i);N_GUARD::QAR2(J)
        • S(i);N_GUARD::QAR2(J),XS(i)
        • P(h);SBLOCK::QAB1(J)
      • Refutation
        • K(e);S_FLIGHT,XP(H)
    • Try
      • Q(J);
      • Vars
        • B(c);CHECK,OGATE,P_SPINB(c),XP(C)::B(A),XB(c)
        • B(c);N_PINP(C),XP(G)::B(A)+P(C)
        • S(i);N_GUARD,XP(G)::QAR2(J)
        • S(i);N_GUARD::QAR2(J),XS(i)
        • B(c);::B(A)+P(C),XB(c)
        • S(i);N_GUARD::QAR2(J)
      • Refutation
        • P(h);
    • Try
      • Q(J);CHECK
      • Vars
        • K(e);S_FLIGHT::QAB1(J)
        • K(e);OGATEB,S_FLIGHT,XP(H)::QAB1(J)
        • S(i);N_GUARD,P_SPINS(i)::QAR2(J),XS(i)
      • Refutation
        • S(i);XQ(J)
    • Try
      • P(H);
      • Vars
        • B(c);CHECK,OGATE,P_SPINB(c),XP(C)::B(A),XB(c)
        • B(c);N_PINP(C),XP(G)::B(A)+P(C)
        • S(i);N_GUARD,XP(G)::QAR2(J)
        • S(i);N_GUARD::QAR2(J),XS(i)
        • B(c);::B(A)+P(C),XB(c)
        • S(i);N_GUARD::QAR2(J)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • P(I);
      • Vars
        • B(c);CHECK,OGATE,P_SPINB(c),XP(C)::B(A),XB(c)
        • B(c);N_PINP(C),XP(G)::B(A)+P(C)
        • S(i);N_GUARD,XP(G)::QAR2(J)
        • S(i);N_GUARD::QAR2(J),XS(i)
        • B(c);::B(A)+P(C),XB(c)
        • S(i);N_GUARD::QAR2(J)
        • P(h);SBLOCK::QAR2(J)
      • Refutation
        • K(e);S_FLIGHT,XP(H)
  • Actual
    • K(B);N_SPINP(C),P-FLIGHT
    • Vars
      • P(d);CHECK,S_CUTB(c)::B(A)+P(C)
      • K(e);OGATEB,S_FLIGHT,XP(H)::QAB1(J)
      • B(c);OGATE,P_SPINB(c),XP(C)::B(A),XB(c)
      • B(c);N_GUARD,XP(G)::B(A)+P(C)
      • S(i);N_GUARD,XP(G)::QAR2(J)
      • S(i);N_GUARD::QAR2(J),XS(i)
      • B(c);OGATE::B(A)+P(C),XB(c)
      • S(i);N_GUARD::QAR2(J)
      • P(h);SBLOCK::QAR2(J)
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