MESON Chess Problem Database

Problem Display
PID: 120661 (B7/4B3/3b4/8/2nk4/3bRQ2/8/K1R1N3 w - - 0 1)

Luger, I

Raketa, 1941-43

B7/4B3/3b4/8/2nk4/3bRQ2/8/K1R1N3

#2

7 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Rxd3#
  • Tries
    • 1.Sc2+?
      • 1...Kc3
        • 2.Rxd3#
      • 1...Kc5
        • 2.Qc6#
      • 1...Bxc2!
    • 1.Sxd3?
      • threat
        • 2.Re4#
        • 2.Qe4#
      • 1...Sxe3
        • 2.Qe4#
      • 1...Sd2!
    • 1.Rxd3+?
      • 1...Ke5
        • 2.Qe4#
        • 2.Qf6#
      • 1...Kc5!
  • Keys
    • 1.Re5!
      • threat
        • 2.Rd5#
        • 2.Qd5#
      • 1...Kxe5
        • 2.Qf6#
      • 1...Bxe5
        • 2.Qxd3#
      • 1...Sxe5
        • 2.Qf2#
      • 1...Bc2
        • 2.Rd5#
      • 1...Be4
        • 2.Qxe4#
        • 2.Qc3#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sb6
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(d);SBLOCK::R1(D),XB(a)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(c);P_SPINB(a),S_FLIGHT::R1(D),XB(a)
        • K(c);P_SPINB(d),S_FLIGHT::QAR1(E)
      • Refutation
        • B(a);XS(C)
    • Try
      • S(C);XB(a)
      • Threat
        • DUALS(2)
      • Vars
        • S(b);XR(D)::QAR1(E)
      • Refutation
        • S(b);
    • Try
      • R(D);CHECK,XB(a)
      • Refutation
        • K(c);P_SPINB(d),P_SPINS(b),S_FLIGHT
  • Actual
    • R(D);
    • Threat
      • DUALS(2)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XR(D)::QAB1(E)
      • B(d);SBLOCK,XR(D)::QAR1(E),XB(a)
      • S(b);N_GUARD,SBLOCK,XR(D)::QAB(E)
      • B(a);::R1(D)
      • S(b);N_GUARD::QAB1(E),XS(b)
      • S(b);N_GUARD::QAB1(E)
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