MESON Chess Problem Database

Problem Display
PID: 11573 (3b4/4rP1P/b2p4/3P1P2/1P1kB2R/1P1N2R1/2q2N1K/1n2Q1B1 w - - 0 1)

Andersson, Gunnar

1st Prize, Problemschack, 1939

3b4/4rP1P/b2p4/3P1P2/1P1kB2R/1P1N2R1/2q2N1K/1n2Q1B1

#2

14 + 7

3098 FIDE Album (1914-1944) (I) 1971
15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Sxd1#
      • 2.Sh1#
      • 2.Sh3#
      • 2.Sg4#
    • 1...Qxd3
      • 2.Sxd3#
    • 1...Qxf2+
      • 2.Bxf2#
    • 1...Qc3
      • 2.Sd1#
      • 2.Sh1#
      • 2.Sh3#
      • 2.Sg4#
      • 2.Qe3#
    • 1...Qc4
      • 2.Sd1#
      • 2.Sh1#
      • 2.Sh3#
      • 2.Sg4#
    • 1...Qc5
      • 2.Sd1#
      • 2.Sh1#
      • 2.Sh3#
      • 2.Sg4#
    • 1...Qc6
      • 2.Sd1#
      • 2.Sh1#
      • 2.Sh3#
      • 2.Sg4#
    • 1...Qc7
      • 2.Sd1#
      • 2.Sh1#
      • 2.Sh3#
      • 2.Sg4#
    • 1...Qc8
      • 2.Sd1#
      • 2.Sh1#
      • 2.Sh3#
      • 2.Sg4#
    • 1...Sd2
      • 2.Sd1#
    • 1...Sc3
      • 2.Qe3#
  • Keys
    • 1.Se5!
      • threat
        • 2.Sf3#
      • 1...Qxf2+
        • 2.Bg2#
      • 1...Kxe5
        • 2.h8Q#
        • 2.h8B#
      • 1...Qxb3
        • 2.Sfd3#
        • 2.Bh1#
        • 2.Bg2#
        • 2.Bf3#
      • 1...Qxe4
        • 2.Qxe4#
      • 1...Rxe5
        • 2.Qe3#
      • 1...dxe5
        • 2.Qe3#
      • 1...Qd1
        • 2.Sfd3#
        • 2.Sfg4#
        • 2.Sc6#
        • 2.Bf3#
      • 1...Qd3
        • 2.Sfxd3#
        • 2.Sc6#
      • 1...Qd2
        • 2.Sc6#
      • 1...Qe2
        • 2.Sc6#
      • 1...Qc3
        • 2.Sfd3#
        • 2.Bh1#
        • 2.Bg2#
        • 2.Bf3#
      • 1...Be2
        • 2.Sfd3#
      • 1...Sd2
        • 2.Sfg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • Q(b);N_PINS(C),XS(F)::B(B)+S(C),XQ(b)
    • Q(b);CHECK,OGATE,P_SPINQ(b),XS(C)::B(B),XQ(b)
    • S(a);N_PINS(C)::B(B)+S(C)
    • S(a);SBLOCK::QAB1(A)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • Q(b);CHECK,N_GUARD,P_SPINQ(b),XS(C)::R(J)+B(I)
      • K(c);S_FLIGHT,XS(F)::P=Q
      • Q(b);N_PINS(C),OGATE,P_SPINQ(b),XB(I)::QAR1(A),XQ(b)
      • R(f);SBLOCK,XS(F)::QAB1(A)
      • P(e);SBLOCK,XS(F)::QAB1(A)
      • Q(b);N_GUARD::S(F)
      • B(d);N_PINS(C)::B(B)+S(C)
      • S(a);N_PINS(C)::B(B)+S(C)
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