MESON Chess Problem Database

Problem Display
PID: 170066 (1q3B2/1N6/4Np2/4kP2/1r2P1R1/r1b5/B1Q4K/4R3 w - - 0 1)

Sebastia, V

Enroque!!, 1948

1q3B2/1N6/4Np2/4kP2/1r2P1R1/r1b5/B1Q4K/4R3

#2

10 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qd6
      • 2.Bxd6#
    • 1...Qa7
      • 2.Bd6#
    • 1...Qa8
      • 2.Bd6#
    • 1...Qc8
      • 2.Bd6#
    • 1...Qe8
      • 2.Bd6#
    • 1...Rxe4
      • 2.Qxe4#
    • 1...Ba1
      • 2.Qc5#
    • 1...Bxe1
      • 2.Qc5#
    • 1...Bb2
      • 2.Qc5#
    • 1...Bd2
      • 2.Qc5#
  • Tries
    • 1.Bh6?
      • threat
        • 2.Bf4#
      • 1...Rxe4
        • 2.Qxe4#
      • 1...Bd2
        • 2.Qc5#
      • 1...Qh8!
    • 1.Qxc3+?
      • 1...Rd4
        • 2.Qxd4#
      • 1...Rxc3!
  • Keys
    • 1.Sg5!
      • threat
        • 2.Sf3#
      • 1...Kd4+
        • 2.e5#
      • 1...Rxe4
        • 2.Qxe4#
      • 1...Bxe1
        • 2.Qc5#
      • 1...fxg5
        • 2.Bg7#
      • 1...Ba1
        • 2.Qc5#
      • 1...Bb2
        • 2.Qc5#
      • 1...Bd2
        • 2.Qc5#
      • 1...Bd4
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • Q(f);N_GUARD::B(J),XQ(f)
    • Q(f);N_GUARD::B(J)
    • R(c);OGATE,P_SPINR(c),XP(E)::QAR1(C),XR(c)
    • B(b);OGATE::QAR2(C)
    • B(b);OGATE,XR(A)::QAR2(C)
  • Tries
    • Try
      • B(J);
      • Threat
        • B(J)
      • Vars
        • R(c);OGATE,P_SPINR(c),XP(E)::QAR1(C),XR(c)
        • B(b);OGATE::QAR2(C)
      • Refutation
        • Q(f);P_PINB(J)
    • Try
      • Q(C);CHECK,XB(b)
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAB1(C),XR(c)
      • Refutation
        • R(a);XQ(C)
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • K(d);CHECK,OGATE,S_FLIGHT::R(F)+P(E)
      • R(c);OGATE,P_SPINR(c),XP(E)::QAR1(C),XR(c)
      • B(b);OGATE,XR(A)::QAR2(C)
      • P(e);OGATEB,XS(H)::B(J)
      • B(b);OGATE::QAR2(C)
      • B(b);SBLOCK::S(H)
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