MESON Chess Problem Database

Problem Display
PID: 225764 (B7/BR5q/6p1/2NNP3/P1kp2Qp/7r/P5p1/1r1nR1Kn w - - 0 1)

Savournin, Jacques

Praca, 1999

B7/BR5q/6p1/2NNP3/P1kp2Qp/7r/P5p1/1r1nR1Kn

#2

11 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Qe6#
    • 1...Ra1
      • 2.Rb4#
    • 1...Rc1
      • 2.Rb4#
    • 1...Rb4
      • 2.Rxb4#
    • 1...Sb2
      • 2.Rb4#
  • Tries
    • 1.Sd7?
      • threat
        • 2.Qxd4#
      • 1...Kd3
        • 2.Qe2#
      • 1...Kxd5
        • 2.Rb4#
      • 1...Rd3
        • 2.Rc7#
      • 1...Rb6!
    • 1.Qe2+?
      • 1...Kxd5
        • 2.Rd7#
      • 1...d3
        • 2.Qe4#
      • 1...Rd3!
  • Keys
    • 1.Sb3!
      • threat
        • 2.Qxd4#
      • 1...Kd3
        • 2.Qe2#
      • 1...Kxd5
        • 2.Rc7#
      • 1...Rd3
        • 2.Rb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • K(f);N_SPINP(g),OGATEB,S_FLIGHT,XS(G)::QAB1(E)
    • R(a);N_GUARD::R1(J)
    • R(a);N_GUARD::R1(J),XR(a)
    • S(b);P_PINR(A),S_CUTR(a)::R1(J)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAR1(E),XP(g)
      • Vars
        • K(f);N_SPINP(g),S_FLIGHT::QAB1(E)
        • K(f);N_SPINP(g),S_FLIGHT,XS(G)::B(K)+R(J)
        • R(e);SBLOCK::R(J)
      • Refutation
        • R(a);
    • Try
      • Q(E);CHECK,N_PINP(g)
      • Vars
        • K(f);S_FLIGHT,XS(G)::B(K)+R(J),DCHECK
        • P(g);OGATEB,P_SPINP(g)::QAR2(E)
      • Refutation
        • R(e);P_SPINR(e)
  • Actual
    • S(F);
    • Threat
      • QAR1(E),XP(g)
    • Vars
      • K(f);N_SPINP(g),S_FLIGHT::QAB1(E)
      • K(f);N_SPINP(g),S_FLIGHT,XS(G)::B(K)+R(J)
      • R(e);SBLOCK::R1(J)
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