MESON Chess Problem Database

Problem Display
PID: 276850 (4n2B/K2p3p/2pPk1b1/3R2P1/p7/2NPpRp1/Q6q/3B2b1 w - - 0 1)

Vinagre, Jose C

Phenix, 2005

4n2B/K2p3p/2pPk1b1/3R2P1/p7/2NPpRp1/Q6q/3B2b1

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qh1
      • 2.Rd4#
    • 1...Qh3
      • 2.Rd4#
    • 1...Qh4
      • 2.Rd4#
    • 1...Qh5
      • 2.Rd4#
    • 1...Qh6
      • 2.Rd4#
    • 1...Bf2
      • 2.Rd4#
    • 1...Sxd6
      • 2.Re5#
    • 1...Sf6
      • 2.Rxf6#
    • 1...Sc7
      • 2.Rf6#
    • 1...Sg7
      • 2.Rf6#
    • 1...e2+
      • 2.Rd4#
    • 1...g2
      • 2.Rd4#
    • 1...cxd5
      • 2.Qxd5#
  • Tries
    • 1.Qc4?
      • threat
        • 2.Rd4#
      • 1...Bxd3
        • 2.Rxd3#
      • 1...Sxd6
        • 2.Re5#
      • 1...cxd5
        • 2.Qxd5#
      • 1...Sf6
        • 2.Rxf6#
      • 1...Be4
        • 2.Qxe4#
      • 1...Sc7
        • 2.Rf6#
      • 1...Sg7
        • 2.Rf6#
      • 1...Qa2!
  • Keys
    • 1.Rf7!
      • threat
        • 2.Re7#
      • 1...e2+
        • 2.Rd4#
      • 1...Kxf7
        • 2.Rf5#
      • 1...Bxf7
        • 2.Bg4#
      • 1...Sxd6
        • 2.Re5#
      • 1...cxd5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 10
  • Sets
    • Q(b);N_GUARD::QAB(B)+R(F)
    • B(a);S_CUTQ(b)::QAB(B)+R(F)
    • S(k);SBLOCK,XP(H)::QAB(B)+R(F),DCHECK
    • S(k);N_GUARD::R1(E),XS(k)
    • S(k);N_GUARD::R1(E)
    • P(c);CHECK,S_CUTQ(b)::QAB(B)+R(F)
    • P(d);S_CUTQ(b)::QAB(B)+R(F)
    • P(f);OGATE,P_SPINP(f),XR(F)::QAB1(B),XP(f)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAB(B)+R(F)
      • Vars
        • B(h);OGATE,XP(D)::QAB(B)+R(F),XB(h)
        • S(k);SBLOCK,XP(H)::QAB(B)+R(F),DCHECK
        • P(f);OGATE,P_SPINP(f),XR(F)::QAB1(B),XP(f)
        • S(k);N_GUARD::R1(E),XS(k)
        • B(h);N_GUARD::QAR2(B),XB(h)
        • S(k);N_GUARD::R1(E)
      • Refutation
        • Q(b);
  • Actual
    • R(E);
    • Threat
      • R1(E)
    • Vars
      • P(c);CHECK,S_CUTQ(b)::QAB(B)+R(F)
      • K(g);N_GUARD,S_FLIGHT,XR(E)::QAB(B)+R(F),DCHECK
      • B(h);N_GUARD,SBLOCK,XR(E)::B(A)
      • S(k);SBLOCK,XP(H)::QAB(B)+R(F),DCHECK
      • P(f);OGATE,P_SPINP(f),XR(F)::QAB1(B),XP(f)
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