MESON Chess Problem Database

Problem Display
PID: 224627 (8/5K2/5N2/5p2/5B1k/5B1q/7N/7R w - - 0 1)

Lopez, Manuel

Newark Sunday Call, 1888

8/5K2/5N2/5p2/5B1k/5B1q/7N/7R

#2

6 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qf1
      • 2.Sxf1#
    • 1...Qg4
      • 2.Shxg4#
    • 1...Qxh2
      • 2.Rxh2#
    • 1...Qxf3
      • 2.Sxf3#
  • Tries
    • 1.Sf1?
      • 1...Qh2
        • 2.Rxh2#
      • 1...Qxh1!
    • 1.Bd1?
      • threat
        • 2.Sf3#
      • 1...Qxh2
        • 2.Rxh2#
      • 1...Qf3
        • 2.Sxf3#
      • 1...Qb3+!
    • 1.Be2?
      • threat
        • 2.Sf3#
      • 1...Qxh2
        • 2.Rxh2#
      • 1...Qf3
        • 2.Sxf3#
      • 1...Qb3+!
    • 1.Bg2?
      • threat
        • 2.Sf3#
      • 1...Qxh2
        • 2.Rxh2#
      • 1...Qf3
        • 2.Sxf3#
      • 1...Qb3+!
    • 1.Bh5?
      • threat
        • 2.Sf3#
      • 1...Qxh2
        • 2.Rxh2#
      • 1...Qf3
        • 2.Sxf3#
      • 1...Qb3+!
    • 1.Bc6?
      • threat
        • 2.Sf3#
      • 1...Qxh2
        • 2.Rxh2#
      • 1...Qf3
        • 2.Sxf3#
      • 1...Qb3+!
    • 1.Bb7?
      • threat
        • 2.Sf3#
      • 1...Qxh2
        • 2.Rxh2#
      • 1...Qf3
        • 2.Sxf3#
      • 1...Qb3+!
    • 1.Ba8?
      • threat
        • 2.Sf3#
      • 1...Qxh2
        • 2.Rxh2#
      • 1...Qf3
        • 2.Sxf3#
      • 1...Qb3+!
  • Keys
    • 1.Bd5!
      • threat
        • 2.Sf3#
      • 1...Qxh2
        • 2.Rxh2#
      • 1...Qf3
        • 2.Sxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • Q(a);::R(A)+S(B),XQ(a)
    • Q(a);OGATE,P_SPINQ(a),XS(B)::R(A),XQ(a)
    • Q(a);XB(C)::R(A)+S(B),DCHECK,XQ(a)
  • Tries
    • Try
      • S(B);P_PINQ(a)
      • Vars
        • Q(a);OGATEB::R(A),XQ(a)
      • Refutation
        • Q(a);N_SPINQ(a),XR(A)
    • Try
      • B(C);
      • Threat
        • S(B)
      • Vars
        • Q(a);OGATE,P_SPINQ(a),XS(B)::R(A),XQ(a)
        • Q(a);::R(A)+S(B),DCHECK,XQ(a)
      • Refutation
        • Q(a);CHECK
    • Try
      • B(C);
      • Threat
        • S(B)
      • Vars
        • Q(a);OGATE,P_SPINQ(a),XS(B)::R(A),XQ(a)
        • Q(a);::R(A)+S(B),DCHECK,XQ(a)
      • Refutation
        • Q(a);CHECK
    • Try
      • B(C);
      • Threat
        • S(B)
      • Vars
        • Q(a);OGATE,P_SPINQ(a),XS(B)::R(A),XQ(a)
        • Q(a);::R(A)+S(B),DCHECK,XQ(a)
      • Refutation
        • Q(a);CHECK
    • Try
      • B(C);
      • Threat
        • S(B)
      • Vars
        • Q(a);OGATE,P_SPINQ(a),XS(B)::R(A),XQ(a)
        • Q(a);::R(A)+S(B),DCHECK,XQ(a)
      • Refutation
        • Q(a);CHECK
    • Try
      • B(C);
      • Threat
        • S(B)
      • Vars
        • Q(a);OGATE,P_SPINQ(a),XS(B)::R(A),XQ(a)
        • Q(a);::R(A)+S(B),DCHECK,XQ(a)
      • Refutation
        • Q(a);CHECK
    • Try
      • B(C);
      • Threat
        • S(B)
      • Vars
        • Q(a);OGATE,P_SPINQ(a),XS(B)::R(A),XQ(a)
        • Q(a);::R(A)+S(B),DCHECK,XQ(a)
      • Refutation
        • Q(a);CHECK
    • Try
      • B(C);
      • Threat
        • S(B)
      • Vars
        • Q(a);OGATE,P_SPINQ(a),XS(B)::R(A),XQ(a)
        • Q(a);::R(A)+S(B),DCHECK,XQ(a)
      • Refutation
        • Q(a);CHECK
  • Actual
    • B(C);
    • Threat
      • S(B)
    • Vars
      • Q(a);OGATE,P_SPINQ(a),XS(B)::R(A),XQ(a)
      • Q(a);::R(A)+S(B),DCHECK,XQ(a)
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