MESON Chess Problem Database

Problem Display
PID: 149432 (b6b/2KnR2B/4N1N1/2pkpr1R/Q4P2/p3pp2/8/B7 w - - 0 1)

Savournin, Jacques

The Problemist, 2012

b6b/2KnR2B/4N1N1/2pkpr1R/Q4P2/p3pp2/8/B7

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf4
      • 2.Sexf4#
      • 2.Sgxf4#
    • 1...c4
      • 2.Qxa8#
    • 1...exf4
      • 2.Sexf4#
      • 2.Sgxf4#
  • Tries
    • 1.Kxd7?
      • threat
        • 2.Sc7#
      • 1...c4
        • 2.Qxa8#
      • 1...Bc6+!
    • 1.Qb3+?
      • 1...Ke4
        • 2.Qc4#
      • 1...c4!
    • 1.Qb5?
      • threat
        • 2.Qd3#
      • 1...Ke4
        • 2.Qc4#
      • 1...Rxf4
        • 2.Sgxf4#
      • 1...exf4
        • 2.Sexf4#
      • 1...e4!
    • 1.Qxd7+?
      • 1...Ke4
        • 2.Sxc5#
      • 1...Kc4!
  • Keys
    • 1.Qa6!
      • threat
        • 2.Qd3#
      • 1...Ke4
        • 2.Qc4#
      • 1...Rxf4
        • 2.Sgxf4#
      • 1...exf4
        • 2.Sexf4#
      • 1...c4
        • 2.Qxa8#
      • 1...e4
        • 2.Rxd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(d);SBLOCK::QAB(B),XB(i)
  • Tries
    • Try
      • K(G);P-FLIGHT,XS(h)
      • Threat
        • S(E)
      • Vars
        • P(d);SBLOCK::QAB(B),XB(i)
      • Refutation
        • B(i);CHECK
    • Try
      • Q(B);CHECK
      • Vars
        • K(e);S_FLIGHT::QAR2(B)
      • Refutation
        • P(d);P_SPINP(d)
    • Try
      • Q(B);P_PINP(d)
      • Threat
        • QAR2(B)
      • Vars
        • K(e);N_SPINP(d),S_FLIGHT::QAR2(B)
        • R(g);XP(C)::S(F),XR(g)
        • P(f);P_SPINR(g),XP(C)::S(E),XP(f)
      • Refutation
        • P(f);P_SPINR(g)
    • Try
      • Q(B);CHECK,XS(h)
      • Vars
        • K(e);S_FLIGHT::S(E),XP(d)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAR2(B)
    • Vars
      • K(e);S_FLIGHT::QAR2(B)
      • R(g);P_SPINP(f),XP(C)::S(F),XR(g)
      • P(f);P_SPINR(g),XP(C)::S(E),XP(f)
      • P(d);SBLOCK::QAB(B),XB(i)
      • P(f);P_SPINR(g),SBLOCK::R(H),XS(h)
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