MESON Chess Problem Database

Problem Display
PID: 186885 (3B4/7B/1bQ1pP1p/4p1kp/K1R4p/p4P1r/2nr1PP1/q5R1 w - - 0 1)

Raisanen, Jaakko

Freie Presse, 2000

(First published on Fri Dec 1 2000)

3B4/7B/1bQ1pP1p/4p1kp/K1R4p/p4P1r/2nr1PP1/q5R1

#2

10 + 12

15391 Problemschach-Jahrbuch (2000) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Qb2
      • 2.gxh3#
    • 1...Qc3
      • 2.gxh3#
    • 1...Qa2
      • 2.gxh3#
  • Tries
    • 1.Qxe6?
      • threat
        • 2.Qf5#
        • 2.Qg8#
      • 1...Rxd8
        • 2.Qf5#
      • 1...Rxf3
        • 2.Qg8#
      • 1...Bxd8
        • 2.Qf5#
      • 1...Qd4
        • 2.Qf5#
      • 1...Rd4
        • 2.Qf5#
        • 2.Qxe5#
      • 1...Bd4
        • 2.Qf5#
      • 1...e4
        • 2.Qf5#
      • 1...Rd7
        • 2.Qf5#
      • 1...Se3
        • 2.Qg8#
      • 1...Sd4!
    • 1.f4+?
      • 1...Kg4
        • 2.Qxe6#
      • 1...exf4!
  • Keys
    • 1.Qe4!
      • threat
        • 2.Qg6#
      • 1...Qd4
        • 2.gxh3#
      • 1...Rd4
        • 2.Qxe5#
      • 1...Bd4
        • 2.f7#
      • 1...Sd4
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • Q(a);N_GUARD::R(A)+P(C),XR(e)
  • Tries
    • Try
      • Q(G);XP(k)
      • Threat
        • DUALS(2)
      • Vars
        • R(c);XB(J)::QAR1(G)
        • R(e);XP(D)::QAR(G)
        • B(j);XB(J)::QAR1(G)
        • Q(a);P_PINR(F)::QAR1(G)
        • B(j);::QAR1(G)
        • P(g);::QAR1(G)
        • R(c);::QAR1(G)
        • S(b);::QAR(G)
      • Refutation
        • S(b);
    • Try
      • P(D);CHECK
      • Vars
        • K(h);P-FLIGHT::QAB(G),XP(k)
      • Refutation
        • P(g);XP(D)
  • Actual
    • Q(G);
    • Threat
      • QAR1(G)
    • Vars
      • Q(a);N_GUARD,P_PINR(F)::R(A)+P(C),XR(e)
      • R(c);P_PINR(F),S_CUTQ(a)::QAR2(G),XP(g)
      • B(j);N_GUARD,S_CUTR(c)::B(J)+P(H)
      • S(b);N_GUARD,S_CUTB(j)::QAB(G)
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