MESON Chess Problem Database

Problem Display
PID: 277057 (4Kn2/2p1RN1B/3b2q1/1p6/R1p2pP1/1Npk1p2/1p3Q2/8 w - - 0 1)

Tritten, Pierre

Phenix, 2005

4Kn2/2p1RN1B/3b2q1/1p6/R1p2pP1/1Npk1p2/1p3Q2/8

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Bxe4#
    • 1...Qf5
      • 2.Bxf5#
    • 1...Bc5
      • 2.Sxc5#
    • 1...Be5
      • 2.Sc5#
    • 1...Se6
      • 2.Bxg6#
    • 1...Sd7
      • 2.Bxg6#
    • 1...b1S
      • 2.Sc1#
    • 1...b1B
      • 2.Sc1#
    • 1...c2
      • 2.Qd4#
      • 2.Qd2#
      • 2.Qxf3#
    • 1...cxb3
      • 2.Rd4#
  • Tries
    • 1.Re2?
      • threat
        • 2.Qxf3#
      • 1...Qe4+
        • 2.Bxe4#
      • 1...Bc5
        • 2.Sxc5#
      • 1...fxe2!
  • Keys
    • 1.Rd7!
      • threat
        • 2.Sc5#
      • 1...Qe4+
        • 2.Se5#
      • 1...Ke4
        • 2.Qd4#
      • 1...Sxd7
        • 2.Bxg6#
      • 1...cxb3
        • 2.Rd4#
      • 1...c2
        • 2.Qxf3#
      • 1...Se6
        • 2.Bxg6#
      • 1...c5
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • Q(i);N_PINS(F),OGATE,P_PINR(E)::B(G),XQ(i)
    • Q(i);N_PINS(F),OGATE::B(G),XQ(i)
    • B(h);N_GUARD::S(B),XB(h)
    • B(h);N_GUARD::S(B)
    • S(k);N_GUARD::B(G),XQ(i)
    • P(a);N_GUARD::S(B)
    • P(e);OGATE,XS(B)::R1(C)
  • Tries
    • Try
      • R(E);
      • Threat
        • QAR2(A),XP(d)
      • Vars
        • Q(i);CHECK,N_PINS(F),OGATE::B(G),XQ(i)
        • B(h);N_GUARD::S(B),XB(h)
      • Refutation
        • P(d);XR(E)
  • Actual
    • R(E);P_PINB(h)
    • Threat
      • S(B)
    • Vars
      • Q(i);CHECK,N_PINS(F)::S(F)
      • K(c);N_GUARD,N_SPINB(h),P_SPINP(e),S_FLIGHT::QAR1(A)
      • S(k);N_GUARD,N_SPINB(h),XR(E)::B(G),XQ(i)
      • P(e);OGATE,XS(B)::R1(C)
      • P(b);SBLOCK::QAR2(A),XP(d)
      • S(k);N_GUARD::B(G),XQ(i)
      • P(j);::S(B),XP(j)
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