MESON Chess Problem Database

Problem Display
PID: 46278 (8/3pp3/2n1N1K1/5NP1/3PkP1R/b2n4/B1Q1P3/3r4 w - - 0 1)

Wirtanen, Erkki Aukusti

3rd Prize, Nanning MT (Probleemblad), 1959

8/3pp3/2n1N1K1/5NP1/3PkP1R/b2n4/B1Q1P3/3r4

#2

10 + 7

3749 FIDE Album (1959-1961) 1966

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qxd3#
    • 1...Rb1
      • 2.Qxd3#
    • 1...Rc1
      • 2.Qxd3#
    • 1...Re1
      • 2.Qxd3#
    • 1...Rf1
      • 2.Qxd3#
    • 1...Rg1
      • 2.Qxd3#
    • 1...Rh1
      • 2.Qxd3#
    • 1...Bc1
      • 2.Sc5#
    • 1...Bb2
      • 2.Sc5#
    • 1...Bc5
      • 2.Sxc5#
    • 1...Sb4
      • 2.Sc5#
    • 1...Se5+
      • 2.fxe5#
    • 1...dxe6
      • 2.Qxc6#
  • Tries
    • 1.Qxc6+?
      • 1...d5
        • 2.Bxd5#
        • 2.Qxd5#
      • 1...dxc6!
    • 1.exd3+?
      • 1...Kf3
        • 2.Bd5#
      • 1...Rxd3!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Qd5#
      • 1...Sxf4+
        • 2.Rxf4#
      • 1...Sde5+
        • 2.fxe5#
      • 1...Sce5+
        • 2.dxe5#
      • 1...dxe6
        • 2.Qxc6#
      • 1...Sdb4
        • 2.Sc5#
      • 1...Scb4
        • 2.d5#
      • 1...d5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 10
  • Sets
    • R(a);N_GUARD::QAB1(B),XS(c)
    • R(a);N_GUARD,P_PINP(H)::QAB1(B),XS(c)
    • B(b);N_GUARD::S(I)
    • B(b);N_GUARD::S(I),XB(b)
    • S(e);S_CUTB(b)::S(I)
    • S(e);CHECK,OGATE::R(F)+P(E),XS(e)
    • P(f);N_GUARD,XS(I)::QAB(B),XS(e)
  • Tries
    • Try
      • Q(B);CHECK,N_PINS(c),XS(e)
      • Refutation
        • P(f);XQ(B)
    • Try
      • P(C);CHECK,XS(c)
      • Vars
        • K(d);S_FLIGHT::B(A)
      • Refutation
        • R(a);P_SPINR(a),XP(C)
  • Actual
    • Q(B);N_PINS(c)
    • Threat
      • QAB1(B)
    • Vars
      • S(c);CHECK,OGATE,P_SPINS(c),XP(E)::R1(F),XS(c)
      • S(c);CHECK,OGATE::R(F)+P(E),XS(c)
      • S(e);CHECK,OGATE::QAR(B)+P(D),XS(e)
      • P(f);N_GUARD,XS(I)::QAB(B),XS(e)
      • S(c);N_GUARD,S_CUTB(b)::S(I)
      • S(e);N_GUARD::QAR(B)+P(D)
      • P(f);::QAB1(B),XP(f)
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