MESON Chess Problem Database

Problem Display
PID: 96465 (3b2R1/8/3B1p2/4p1q1/7p/1Q1N1rkB/K3P3/7R w - - 0 1)

Kapros, Jorge Marcelo

Problem Observer, 1992

3b2R1/8/3B1p2/4p1q1/7p/1Q1N1rkB/K3P3/7R

#2

8 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qg4
      • 2.Rxg4#
    • 1...Qg6
      • 2.Rxg6#
    • 1...Qg7
      • 2.Rxg7#
    • 1...Qxg8
      • 2.Qxg8#
  • Tries
    • 1.Bxe5+?
      • 1...Rf4
        • 2.Bxf4#
      • 1...fxe5!
  • Keys
    • 1.Sxe5!
      • threat
        • 2.Qxf3#
      • 1...Kf2
        • 2.Qxf3#
      • 1...Kf4
        • 2.Qxf3#
      • 1...Qxg8
        • 2.Sg4#
      • 1...Rxb3
        • 2.Sd3#
      • 1...Rc3
        • 2.Sd3#
      • 1...Rd3
        • 2.Sxd3#
      • 1...Re3
        • 2.Qxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 3
  • Sets
    • Q(e);OGATE::R1(H),XQ(e)
    • Q(e);OGATEB::R(H),XQ(e)
    • Q(e);N_SPINQ(e),OGATE,P_PINQ(D),XR(H)::QAR(D),XQ(e)
  • Tries
    • Try
      • B(G);CHECK,XP(d)
      • Vars
        • R(a);N_GUARD,P_SPINR(a)::B(G),XR(a)
      • Refutation
        • P(f);XB(G)
  • Actual
    • S(E);P_PINR(a),XP(d)
    • Threat
      • QAR1(D),XR(a)
    • Vars
      • K(b);N_SPINQ(e),N_SPINR(a),S_FLIGHT::QAR1(D),XR(a)
      • Q(e);N_GUARD,N_SPINQ(e),P_PINQ(D),XR(H)::B(G)+S(E)
      • R(a);N_GUARD,N_SPINR(a),XQ(D)::B(G)+S(E)
      • R(a);N_GUARD::B(G)+S(E)
      • R(a);N_GUARD::B(G)+S(E),XR(a)
      • R(a);OGATEB::QAR2(D),XR(a)
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