MESON Chess Problem Database

Problem Display
PID: 65819 (2n5/N7/pB4Q1/2n4p/Pk3rRr/1Pb1p1p1/1P6/N1R3Kb w - - 0 1)

Robert, Philippe

Sp. HM., Phenix, 1994

2n5/N7/pB4Q1/2n4p/Pk3rRr/1Pb1p1p1/1P6/N1R3Kb

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Sc6#
    • 1...Bc6
      • 2.Sxc6#
    • 1...Bd4
      • 2.Rc4#
    • 1...Se4
      • 2.Sc6#
    • 1...Sxb6
      • 2.Qxb6#
    • 1...g2
      • 2.Sc6#
  • Tries
    • 1.Rxf4+?
      • 1...Be4
        • 2.Sc6#
      • 1...Bd4
        • 2.Rc4#
      • 1...Se4
        • 2.Sc6#
      • 1...Rxf4!
    • 1.Qc2?
      • threat
        • 2.Qxc3#
      • 1...Bxb2
        • 2.Qxc5#
      • 1...Sxb3
        • 2.Qxb3#
      • 1...Be1
        • 2.Qxc5#
      • 1...Bd2
        • 2.Qxc5#
      • 1...Bd4
        • 2.Qc4#
      • 1...Be5
        • 2.Qxc5#
      • 1...Bf6
        • 2.Qxc5#
      • 1...Bg7
        • 2.Qxc5#
      • 1...Bh8
        • 2.Qxc5#
      • 1...Se4
        • 2.Sc6#
      • 1...Sxa4!
    • 1.Qe4+?
      • 1...Rxe4
        • 2.Sc6#
      • 1...Bd4
        • 2.Sc6#
        • 2.Rc4#
      • 1...Sxe4
        • 2.Sc6#
      • 1...Bxe4!
    • 1.Qd6?
      • threat
        • 2.Qxc5#
      • 1...Sxb6
        • 2.Qxb6#
      • 1...Bd4
        • 2.Rc4#
      • 1...Sxd6!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Qxc5#
      • 1...Bxc6
        • 2.Sxc6#
      • 1...Sxb3
        • 2.Sc2#
      • 1...Sxa4
        • 2.Qxa4#
      • 1...Sxb6
        • 2.Qxb6#
      • 1...Bd4
        • 2.Rc4#
      • 1...Sd3
        • 2.Qxc3#
      • 1...Se4
        • 2.Qc4#
      • 1...Se6
        • 2.Qxc3#
      • 1...Sb7
        • 2.Qxc3#
      • 1...Sd7
        • 2.Qxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • R(f);S_CUTB(a)::S(J)
    • B(a);N_GUARD::S(J),XB(a)
    • B(b);N_SPINR(f),OGATE::R1(B)
    • S(h);N_SPINR(f),S_CUTB(a)::S(J)
    • S(k);OGATE,XB(H)::QAR2(I),XS(k)
    • P(d);S_CUTB(a)::S(J)
  • Tries
    • Try
      • R(G);CHECK,XR(f)
      • Vars
        • B(a);P_SPINB(a)::S(J)
        • B(b);OGATE,P_SPINB(b)::R1(B)
        • S(h);P_SPINS(h)::S(J)
      • Refutation
        • R(g);XR(G)
    • Try
      • Q(I);
      • Threat
        • QAB1(I),XB(b)
      • Vars
        • B(b);OGATE,XP(D)::QAB1(I),XS(h)
        • S(h);OGATE,XP(E)::QAR1(I),XS(h)
        • B(b);OGATE::QAB1(I),XS(h)
        • B(b);N_SPINR(f),OGATE::QAR1(I)
        • S(h);N_SPINR(f),S_CUTB(a)::S(J)
      • Refutation
        • S(h);XP(F)
    • Try
      • Q(I);CHECK,N_PINR(f)
      • Vars
        • R(f);P_SPINR(f),XQ(I)::S(J)
        • S(h);XQ(I)::S(J)
      • Refutation
        • B(a);XQ(I)
    • Try
      • Q(I);P_PINS(h)
      • Threat
        • QAB1(I),XS(h)
      • Vars
        • S(k);OGATE,XB(H)::QAR2(I),XS(k)
        • B(b);N_SPINR(f),OGATE::R1(B)
      • Refutation
        • S(k);N_SPINS(h),XQ(I)
  • Actual
    • Q(I);
    • Threat
      • QAB1(I),XS(h)
    • Vars
      • B(a);XQ(I)::S(J),XB(a)
      • S(h);SBLOCK,XP(E)::S(A)
      • S(h);OGATE,XP(F)::QAR1(I),XS(h)
      • S(k);OGATE,XB(H)::QAR2(I),XS(k)
      • B(b);N_SPINR(f),OGATE::R1(B)
      • S(h);OGATE::QAB1(I),XB(b)
      • S(h);N_SPINR(f),OGATE::QAR1(I)
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