MESON Chess Problem Database

Problem Display
PID: 129745 (8/2prP1n1/8/7Q/P3N1N1/b1Pkp2R/1p2r3/1Kn5 w - - 0 1)

Bobrov, Pavel Pavlovich

Deutsche Schachzeitung, 1908

8/2prP1n1/8/7Q/P3N1N1/b1Pkp2R/1p2r3/1Kn5

#2

8 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qb5#
    • 1...Rd5
      • 2.Qxd5#
    • 1...Rxe7
      • 2.Qd5#
    • 1...Bd6
      • 2.Qd5#
  • Tries
    • 1.Sgf2+?
      • 1...Kc4
        • 2.Qb5#
      • 1...Rxf2!
    • 1.Rxe3+?
      • 1...Kc4
        • 2.Qb5#
      • 1...Rxe3!
  • Keys
    • 1.Rh4!
      • threat
        • 2.Se5#
      • 1...Kc4
        • 2.Qb5#
      • 1...Kxe4
        • 2.Sf2#
      • 1...Rxe7
        • 2.Qd5#
      • 1...Rd5
        • 2.Qxd5#
      • 1...Bd6
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(e);N_SPINP(f),S_FLIGHT::QAB1(G)
    • R(h);N_GUARD::QAR2(G),XR(h)
    • R(h);N_GUARD,XP(H)::QAR2(G)
    • B(d);S_CUTR(h)::QAR2(G)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(e);N_SPINP(f),S_FLIGHT::QAB1(G)
      • Refutation
        • R(c);XS(F)
    • Try
      • R(C);CHECK,XP(f)
      • Vars
        • K(e);S_FLIGHT::QAB1(G)
      • Refutation
        • R(c);XR(C)
  • Actual
    • R(C);N_PINP(f)
    • Threat
      • S(F)
    • Vars
      • K(e);S_FLIGHT::QAB1(G)
      • K(e);S_FLIGHT,XS(E)::R(C)+S(F),DCHECK
      • R(h);N_GUARD,XP(H)::QAR2(G)
      • R(h);N_GUARD::QAR2(G),XR(h)
      • B(d);S_CUTR(h)::QAR2(G)
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