MESON Chess Problem Database

Problem Display
PID: 198415 (8/8/2p5/2Pk1B2/1KN1r3/3Pr3/8/7Q w - - 0 1)

Kintzig, Robert

Bekes, 1920

8/8/2p5/2Pk1B2/1KN1r3/3Pr3/8/7Q

#2

6 + 4

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd3
      • 2.Qxe4#
    • 1...Rg3
      • 2.Qxe4#
    • 1...Rh3
      • 2.Qxe4#
  • Tries
    • 1.Bxe4+?
      • 1...Kd4
        • 2.Qa1#
        • 2.Qh8#
      • 1...Rxe4
        • 2.Qxe4#
      • 1...Ke6!
    • 1.dxe4+?
      • 1...Rxe4
        • 2.Qxe4#
      • 1...Kd4!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Qd8#
      • 1...Rxc4+
        • 2.dxc4#
      • 1...Re6
        • 2.Sb6#
      • 1...Re7
        • 2.Sb6#
      • 1...Re8
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • R(a);N_GUARD,XP(B)::QAB1(A),XR(b)
    • R(a);N_GUARD::QAB1(A),XR(b)
  • Tries
    • Try
      • B(F);CHECK,N_SPINS(D),XR(b)
      • Vars
        • R(a);OGATE,P_PINS(D),P_SPINR(a),XB(F)::QAB1(A),XR(a)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • P(B);CHECK,N_SPINS(D),XR(b)
      • Vars
        • R(a);OGATE,P_PINS(D),P_SPINR(a),XP(B)::QAB1(A),XR(a)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(A);N_PINR(b)
    • Threat
      • QAR(A)
    • Vars
      • R(b);CHECK,OGATE,XS(D)::P(B),XR(b)
      • R(b);N_PINS(D)::S(D)
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