MESON Chess Problem Database

Problem Display
PID: 90100 (8/2p2P2/p1P2P2/K2k2NQ/6B1/1P3R2/3NPr2/3R2B1 w - - 0 1)

Selb, Hans

Die Schwalbe, 1960

8/2p2P2/p1P2P2/K2k2NQ/6B1/1P3R2/3NPr2/3R2B1

#2

13 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Se6#
    • 1...Ke5
      • 2.Sc4#
  • Tries
    • 1.Sge4+?
      • 1...Kd4
        • 2.Bxf2#
        • 2.Rd3#
        • 2.Qc5#
      • 1...Kxc6!
    • 1.Se6+?
      • 1...Kd6
        • 2.Qc5#
      • 1...Kxc6!
    • 1.f8Q?
      • 1...Kd4
        • 2.Sc4#
        • 2.Se6#
      • 1...Ke5
        • 2.Sc4#
        • 2.Se6#
        • 2.Qc5#
      • 1...Rxe2
        • 2.Qc5#
      • 1...Rxf3
        • 2.Qc5#
      • 1...Rf1
        • 2.Qc5#
      • 1...Rg2
        • 2.Qc5#
      • 1...Rh2
        • 2.Qc5#
      • 1...Kxc6!
  • Keys
    • 1.Bd7!
      • 1...Kd4
        • 2.Se6#
      • 1...Kc5
        • 2.Sde4#
      • 1...Ke5
        • 2.Sc4#
      • 1...Kd6
        • 2.Sge4#
      • 1...Rxe2
        • 2.Sge4#
      • 1...Rxf3
        • 2.Sdxf3#
      • 1...Rf1
        • 2.Sge4#
      • 1...Rg2
        • 2.Sc4#
      • 1...Rh2
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT,P_SPINR(a)::S(I)
    • K(b);P-FLIGHT::S(C)
  • Tries
    • Try
      • S(I);CHECK
      • Refutation
        • K(b);S_FLIGHT,XP(K)
    • Try
      • S(I);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAB1(J)
      • Refutation
        • K(b);S_FLIGHT,XP(K)
    • Try
      • P(M);
      • Vars
        • R(a);XP(D)::QAR1(M)
        • R(a);XR(F)::QAR1(M)
        • R(a);::QAR1(M)
      • Refutation
        • K(b);S_FLIGHT,XP(K)
  • Actual
    • B(G);
    • Vars
      • K(b);P-FLIGHT,P_SPINR(a)::S(I)
      • K(b);P-FLIGHT,P_SPINR(a)::S(C)
      • K(b);P-FLIGHT::S(C)
      • K(b);P-FLIGHT::S(I)
      • R(a);XP(D)::QAR(J)+S(I)
      • R(a);XR(F)::R(A)+S(C),XR(a)
      • R(a);::QAR(J)+S(I)
      • R(a);::R(A)+S(C)
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