MESON Chess Problem Database

Problem Display
PID: 89891 (K3R3/B4p2/1P1pb3/6r1/2P2pPb/1N2k3/8/1B3Q1n w - - 0 1)

Kubicek, James Lawrence

Die Schwalbe, 1975

K3R3/B4p2/1P1pb3/6r1/2P2pPb/1N2k3/8/1B3Q1n

#2

9 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg4
      • 2.b7#
    • 1...Rg6
      • 2.b7#
    • 1...Rg7
      • 2.b7#
    • 1...Rg8
      • 2.b7#
    • 1...Bf2
      • 2.Qd3#
    • 1...f5
      • 2.Rxe6#
      • 2.b7#
  • Tries
    • 1.Rxe6+?
      • 1...Re5
        • 2.b7#
      • 1...fxe6!
  • Keys
    • 1.Be4!
      • threat
        • 2.Qf3#
      • 1...Bd5+
        • 2.b7#
      • 1...Kxe4
        • 2.Qe2#
      • 1...Bxg4
        • 2.Bf5#
      • 1...f3
        • 2.Qxf3#
      • 1...Bf2
        • 2.Qd3#
      • 1...Sf2
        • 2.Qe1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • R(e);N_GUARD,XP(E)::B(G)+P(F)
    • R(e);N_GUARD::B(G)+P(F)
    • R(e);N_GUARD,P_PINR(I)::B(G)+P(F)
    • B(d);SBLOCK::QAR1(B)
  • Tries
    • Try
      • R(I);CHECK,XB(g)
      • Vars
        • R(e);P_SPINR(e)::B(G)+P(F)
      • Refutation
        • P(h);XR(I)
  • Actual
    • B(A);N_PINB(g)
    • Threat
      • QAR1(B)
    • Vars
      • B(g);CHECK,S_CUTR(e)::B(G)+P(F)
      • K(b);P-FLIGHT,P_SPINB(g),XB(A)::QAR2(B)
      • B(g);OGATEB,XP(E)::R(I)+B(A)
      • P(c);::QAR1(B),XP(c)
      • B(d);SBLOCK::QAR1(B)
      • S(a);S_CUTB(d)::QAR2(B)
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