MESON Chess Problem Database

Problem Display
PID: 102047 (3R1Q2/4N3/2p5/2PN4/3k4/5K2/1P1b4/1B1R4 w - - 0 1)

Godbout, Alain J

Apprenti Sorcier, 1991

3R1Q2/4N3/2p5/2PN4/3k4/5K2/1P1b4/1B1R4

#2

9 + 3

5454 Near Snap 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qf6#
  • Tries
    • 1.Se3+?
      • 1...Ke5
        • 2.Qf5#
      • 1...Kxc5!
    • 1.Sb6+?
      • 1...Ke5
        • 2.Qf5#
      • 1...Kxc5!
    • 1.Sf5+?
      • 1...Ke5
        • 2.Qd6#
        • 2.Qe7#
        • 2.Qf6#
        • 2.Qe8#
      • 1...Kc4!
    • 1.Ba2?
      • 1...Kd3
        • 2.Se3#
        • 2.Sb4#
      • 1...Ke5
        • 2.Qf6#
      • 1...cxd5
        • 2.Rxd5#
      • 1...Kxc5!
  • Keys
    • 1.Bd3!
      • 1...Kxd3
        • 2.Se3#
      • 1...Kxc5
        • 2.Sf5#
      • 1...Ke5
        • 2.Qf6#
      • 1...cxd5
        • 2.Rxd5#
      • 1...Bc1
        • 2.Sxc6#
      • 1...Be1
        • 2.Sxc6#
      • 1...Bc3
        • 2.Sxc6#
      • 1...Be3
        • 2.Sxc6#
      • 1...Bb4
        • 2.Sxc6#
      • 1...Bf4
        • 2.Sxc6#
      • 1...Ba5
        • 2.Sxc6#
      • 1...Bg5
        • 2.Sxc6#
      • 1...Bh6
        • 2.Sxc6#

Anticipated by 48646(1878)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINB(a),S_FLIGHT::QAB1(I)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(b);N_SPINB(a),S_FLIGHT::QAR1(I)
      • Refutation
        • K(b);N_SPINB(a),S_FLIGHT,XP(E)
    • Try
      • S(F);CHECK
      • Vars
        • K(b);N_SPINB(a),S_FLIGHT::QAR1(I)
      • Refutation
        • K(b);N_SPINB(a),S_FLIGHT,XP(E)
    • Try
      • S(G);CHECK
      • Refutation
        • K(b);N_SPINB(a),P-FLIGHT
    • Try
      • B(A);
      • Vars
        • K(b);N_SPINB(a),S_FLIGHT::QAB1(I)
        • P(c);OGATE,P_SPINP(c),XS(F)::R1(H),XP(c)
      • Refutation
        • K(b);N_SPINB(a),S_FLIGHT,XP(E)
  • Actual
    • B(A);N_PINB(a)
    • Vars
      • K(b);P-FLIGHT,P_SPINB(a),XB(A)::R(H)+S(F)
      • K(b);S_FLIGHT,XP(E)::QAB(I)+S(G)
      • K(b);S_FLIGHT::QAB1(I)
      • P(c);OGATE,P_SPINP(c),XS(F)::R1(H),XP(c)
      • B(a);::S(G),XP(c)
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