MESON Chess Problem Database

Problem Display
PID: 245701 (2R5/2p5/2pPP3/P1kB1N2/K2n1Nr1/1p2Q2r/7n/6b1 w - - 0 1)

Wirtanen, Erkki Aukusti

Sachove umeni (Ceskoslovensky sach), 1959

2R5/2p5/2pPP3/P1kB1N2/K2n1Nr1/1p2Q2r/7n/6b1

#2

9 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rhh4
      • 2.Qc3#
    • 1...Rh5
      • 2.Qc3#
    • 1...Rh6
      • 2.Qc3#
    • 1...Rh7
      • 2.Qc3#
    • 1...Rh8
      • 2.Qc3#
    • 1...Sf3
      • 2.Qc3#
    • 1...cxd5
      • 2.Rxc7#
    • 1...cxd6
      • 2.Rxc6#
  • Tries
    • 1.Bxb3?
      • threat
        • 2.Sd3#
        • 2.Qe5#
      • 1...Rxf4
        • 2.Qe5#
      • 1...Bxe3
        • 2.Sd3#
      • 1...cxd6
        • 2.Sd3#
      • 1...Sf3
        • 2.Sd3#
        • 2.Qc3#
      • 1...Rxe3!
    • 1.Qc1+?
      • 1...Rc3
        • 2.Qa3#
        • 2.Qxc3#
      • 1...Sc2!
  • Keys
    • 1.Qe5!
      • threat
        • 2.Bxb3#
      • 1...cxd5
        • 2.Qxd5#
      • 1...cxd6
        • 2.Qxd6#
      • 1...Re3
        • 2.Qxd4#
      • 1...Shf3
        • 2.Sd3#
      • 1...Sdf3
        • 2.Qc3#
      • 1...b2
        • 2.Ba2#
        • 2.Bb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • R(d);N_GUARD::QAR2(A)
    • S(b);S_CUTR(d)::QAR2(A)
    • P(h);OGATEB,P_SPINP(i),XB(E)::R(I),XP(i)
    • P(i);OGATE,P_SPINP(h),XP(G)::R1(I),XP(h)
  • Tries
    • Try
      • B(E);XP(c)
      • Threat
        • DUALS(2)
      • Vars
        • R(f);XS(C)::QAR2(A)
        • B(a);N_SPINS(e),XQ(A)::S(C)
        • P(i);P_SPINP(h),XP(G)::S(C)
      • Refutation
        • R(d);N_SPINS(e),XQ(A)
    • Try
      • Q(A);CHECK,N_PINS(e)
      • Refutation
        • S(e);P_PINS(C),P_SPINS(e)
  • Actual
    • Q(A);N_PINS(e)
    • Threat
      • QAR(A)+B(E),XP(c)
    • Vars
      • P(h);OGATE,P_SPINP(h),XB(E)::QAR1(A),XP(h)
      • P(i);OGATE,P_SPINP(h),XP(G)::QAB1(A),XP(i)
      • R(d);S_CUTB(a)::QAB1(A),XS(e)
      • S(b);S_CUTR(d)::S(C)
      • S(e);OGATE,P_PINS(C)::QAR2(A)
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