MESON Chess Problem Database

Problem Display
PID: 101411 (4R1N1/1Q4p1/p7/r2rB1p1/pRPbk3/4P3/2N1P3/1B1K4 w - - 0 1)

Pape, Edouard

Good Companions (October), 1918

4R1N1/1Q4p1/p7/r2rB1p1/pRPbk3/4P3/2N1P3/1B1K4

#2

11 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe3+
      • 2.Sd4#
  • Tries
    • 1.Sf6+?
      • 1...Kf5
        • 2.Sa1#
        • 2.Se1#
        • 2.Sa3#
        • 2.Sxd4#
      • 1...gxf6!
    • 1.Bf4+?
      • 1...Be5+
        • 2.Sd4#
      • 1...Kf5!
  • Keys
    • 1.Sh6!
      • threat
        • 2.Bxd4#
      • 1...Ba1+
        • 2.Bd4#
      • 1...Bb2+
        • 2.Bd4#
      • 1...Bc3+
        • 2.Bd4#
      • 1...Bxe3+
        • 2.Sd4#
      • 1...Bc5+
        • 2.Qxd5#
      • 1...Bxe5+
        • 2.cxd5#
      • 1...Bb6+
        • 2.Bd4#
      • 1...Ba7+
        • 2.Bd4#
      • 1...gxh6
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • B(b);CHECK,SBLOCK,XP(E)::B(A)+S(C)
  • Tries
    • Try
      • S(K);CHECK
      • Refutation
        • P(h);XS(K)
    • Try
      • B(H);CHECK
      • Vars
        • B(b);CHECK,P_SPINB(b)::B(A)+S(C)
      • Refutation
        • K(c);N_SPINR(e),S_FLIGHT
  • Actual
    • S(K);
    • Threat
      • R(J)+B(H),XB(b)
    • Vars
      • B(b);CHECK::R(J)+B(H)
      • B(b);CHECK,SBLOCK,XP(E)::B(A)+S(C)
      • B(b);CHECK,S_CUTR(d)::QAB1(I),XR(e)
      • B(b);CHECK,P_SPINB(b),XB(H)::R(F)+P(G),XR(e)
      • P(h);OGATE,XS(K)::QAB(I)
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