MESON Chess Problem Database

Problem Display
PID: 281838 (8/b2N4/N1B2p2/1P6/2pk1B2/Q2P2Kb/8/8 w - - 0 1)

Palazon, Luis Gomez

Velasco, Jose Luis

Die Schwalbe, 2025

8/b2N4/N1B2p2/1P6/2pk1B2/Q2P2Kb/8/8

#2

8 + 5

5454 Near Snap 2025

SOLUTION

  • SOUND
  • Sets
    • 1...cxd3
      • 2.Qb4#
    • 1...c3
      • 2.Qd6#
  • Tries
    • 1.Kf2?
      • threat
        • 2.Be3#
      • 1...cxd3
        • 2.Qb4#
      • 1...c3
        • 2.Qd6#
      • 1...Bxd7!
    • 1.Bd2?
      • threat
        • 2.Qd6#
        • 2.Qc3#
      • 1...cxd3
        • 2.Qb4#
        • 2.Qc3#
        • 2.Qa4#
      • 1...c3
        • 2.Qd6#
        • 2.Qxc3#
      • 1...Bg2
        • 2.Qc3#
      • 1...Be6
        • 2.Qc3#
      • 1...Bc5
        • 2.Qc3#
      • 1...Bb8+!
    • 1.Qc1?
      • threat
        • 2.Qxc4#
      • 1...Kxd3
        • 2.Qd2#
      • 1...cxd3
        • 2.Be3#
      • 1...c3
        • 2.Qe3#
      • 1...Be6!
    • 1.Qb2+?
      • 1...Kxd3
        • 2.Sb4#
        • 2.Qd2#
      • 1...c3!
    • 1.Qb4?
      • threat
        • 2.Qxc4#
      • 1...Kxd3
        • 2.Qd2#
      • 1...Be6!
  • Keys
    • 1.Sb4!
      • threat
        • 2.Sc2#
      • 1...cxd3
        • 2.Qxd3#
      • 1...c3
        • 2.Qxa7#

Anticipated by 22342(2000)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATEB,SBLOCK,XP(B)::QAR2(A)
    • P(b);SBLOCK::QAR2(A)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Threat
        • B(D)
      • Vars
        • P(b);OGATEB,SBLOCK,XP(B)::QAR2(A)
        • P(b);SBLOCK::QAR2(A)
      • Refutation
        • B(a);XS(H)
    • Try
      • B(D);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::QAB1(A)
        • B(e);::QAB1(A)
      • Refutation
        • B(e);CHECK
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XP(b)
      • Vars
        • K(c);OGATEB,P-FLIGHT,XP(B)::QAR1(A)
        • P(b);SBLOCK,XP(B)::B(D)
        • P(b);SBLOCK::QAB1(A)
      • Refutation
        • B(a);
    • Try
      • Q(A);CHECK
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • Q(A);P_PINP(b)
      • Threat
        • QAR1(A),XP(b)
      • Vars
        • K(c);N_SPINP(b),OGATEB,P-FLIGHT,XP(B)::QAR1(A)
      • Refutation
        • B(a);
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • P(b);OGATE,XP(B)::QAR1(A),XP(b)
      • P(b);SBLOCK::QAB(A),XB(e)
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